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E13.9 ICD-10-CM Code: Other specified diabetes mellitus without complications

Compare with another codeCheck this code on a claim

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
5 inclusion terms · 7 Excludes1 · 5 use-additional codes
Risk adjustment
CMS-HCC V28: 1 category · CMS-HCC V22 category 19 · RxHCC V08 category 31

Billable · FY2027A valid, specific ICD-10-CM code, reportable for dates of service in FY2027.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too; the Instructions section marks which is which.

Use additional codeReport with this code when documented
  • code to identify control using:
  • injectable non-insulin antidiabetic drugs (Z79.85)
  • insulin (Z79.4)
  • oral antidiabetic drugs (Z79.84)

+1 more in Instructions

Excludes1Never report with this code
  • diabetes (mellitus) due to autoimmune process (E10.-)
  • diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction (E10.-)
  • diabetes mellitus due to underlying condition (E08.-)
  • drug or chemical induced diabetes mellitus (E09.-)

+3 more in Instructions

IncludesWhat this code covers
  • diabetes mellitus due to genetic defects of beta-cell function
  • diabetes mellitus due to genetic defects in insulin action
  • postpancreatectomy diabetes mellitus
  • postprocedural diabetes mellitus

+1 more in Instructions

Most relevant related codes MedCoder-derived

Read off the official notes above and this code’s own position in the tabular list. Which to report is a documentation question; Compare shows the two side by side.

CompareCheck ClaimView Related Codes

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v44, Appendix B.

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Risk Adjustment (CMS-HCC)

Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.

  • HCC 38 — Diabetes with Glycemic, Unspecified, or No Complications

Other models: CMS-HCC V22 HCC 19 · RxHCC V08 HCC 31

Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for E13.9 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on E13.9 itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • diabetes mellitus due to genetic defects of beta-cell function
  • diabetes mellitus due to genetic defects in insulin action
  • postpancreatectomy diabetes mellitus
  • postprocedural diabetes mellitus
  • secondary diabetes mellitus NEC

Source: inherited from E13

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Source: inherited from E13

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code to identify control using:
  • injectable non-insulin antidiabetic drugs (Z79.85)
  • insulin (Z79.4)
  • oral antidiabetic drugs (Z79.84)
  • oral hypoglycemic drugs (Z79.84)

Source: inherited from E13

Coder workflow for E13.9

MedCoder structured workflow — derived from this code’s own official record

Before you code E13.9

  1. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on E13.9; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

  2. Confirm the documented diabetes type or cause (the E08–E13 categories are separated by it) and every documented complication or manifestation; the code is built from the type first and the complication second. Then work the category’s Use Additional Code notes for medication and control status. Type 2 is the default only when the type is not documented, and insulin or other medication use does not by itself establish the type (Guidelines I.C.4.a.2, I.C.4.a.3).

    Guide: Secondary diabetes (E08, E09, E13) →

  3. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with E13.9. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

    See the official tabular notes

Choose the right path

  1. Does the documentation support a condition named in E13.9’s Excludes1 note?
    Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
    No → Continue.

    ReviewE10, E08, E09, O24.4, P70.2

Consider E13.9. Then work the Use Additional Code note, and confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
The associated condition or complication
Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).
The conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.
Diabetes type or cause, each complication, and medication use
The type is documented, not inferred from medication (Guidelines I.C.4.a.3); each documented complication takes its own combination code.
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes1 — check before selecting E13.9(7 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with E13.9: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareE10, E08, E09, O24.4, P70.2

    See the official tabular notes · Guidelines I.A.12.a

  • Use Additional Code — after identifying E13.9(5 notes)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with E13.9 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewZ79.85, Z79.4, Z79.84

    See the official tabular notes · Guidelines I.A.13

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: Both the condition E13.9 describes and a condition named in its Excludes1 note are documented for the same encounter.

Coding question: Can both codes be reported?

Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.

Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).

ReviewE10, E08, E09, O24.4, P70.2

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with E13.9?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

ReviewZ79.85, Z79.4, Z79.84

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Don’t confuse E13.9 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of E13.9 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

  • E10— Excludes1 conflict (Excludes1 — generally not reported together)

    Not coded here — the tabular list excludes this pair for the same encounter.

    Not reported together with this code, except where the two conditions are documented as unrelated.

    What moves you there: Documentation of diabetes (mellitus) due to autoimmune process moves the case to E10; the two are not reported together unless documented as unrelated.

    Full comparison: E13.9 vs E10 →

  • E08— Excludes1 conflict (Excludes1 — generally not reported together)

    Not coded here — the tabular list excludes this pair for the same encounter.

    Not reported together with this code, except where the two conditions are documented as unrelated.

    What moves you there: Documentation of diabetes mellitus due to underlying condition moves the case to E08; the two are not reported together unless documented as unrelated.

    Full comparison: E13.9 vs E08 →

  • E09— Excludes1 conflict (Excludes1 — generally not reported together)

    Not coded here — the tabular list excludes this pair for the same encounter.

    Not reported together with this code, except where the two conditions are documented as unrelated.

    What moves you there: Documentation of drug or chemical induced diabetes mellitus moves the case to E09; the two are not reported together unless documented as unrelated.

    Full comparison: E13.9 vs E09 →

  • O24.4— Excludes1 conflict (Excludes1 — generally not reported together)

    Not coded here — the tabular list excludes this pair for the same encounter.

    Not reported together with this code, except where the two conditions are documented as unrelated.

    What moves you there: Documentation of gestational diabetes moves the case to O24.4; the two are not reported together unless documented as unrelated.

    Full comparison: E13.9 vs O24.4 →

  • P70.2— Excludes1 conflict (Excludes1 — generally not reported together)

    Not coded here — the tabular list excludes this pair for the same encounter.

    Not reported together with this code, except where the two conditions are documented as unrelated.

    What moves you there: Documentation of neonatal diabetes mellitus moves the case to P70.2; the two are not reported together unless documented as unrelated.

    Full comparison: E13.9 vs P70.2 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Other specified diabetes mellitus without complications is a billable ICD-10-CM diagnosis code (E13.9).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Official Coding Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Verbatim excerpts from the ICD-10-CM Official Guidelines for Coding and Reporting (CMS/NCHS) that govern this code.

Chapter 4: Endocrine, Nutritional, and Metabolic Diseases (E00 -E89)

a. Diabetes mellitus The diabetes mellitus codes are combination codes that include the type of diabetes mellitus, the body system affected, and the complications affecting that body system. As many codes within a particular category as are necessary to describe all of the complications of the disease may be used. They should be sequenced based on the reason for a particular encounter. Assign as many codes from categories E08 – E13 as needed to identify all of the associated conditions that the patient has.

Chapter 4: Endocrine, Nutritional, and Metabolic Diseases (E00 -E89)

6) Secondary diabetes mellitus Codes under categories E08, Diabetes mellitus due to underlying condition, E09, Drug or chemical induced diabetes mellitus, and E13, Other specified diabetes mellitus, identify complications/manifestations associated with secondary diabetes mellitus. Secondary diabetes is always caused by another condition or event (e.g., cystic fibrosis, malignant neoplasm of pancreas, pancreatectomy, adverse effect of drug, or poisoning).

Chapter 4: Endocrine, Nutritional, and Metabolic Diseases (E00 -E89)

(b) Assigning and sequencing secondary diabetes codes and its causes The sequencing of the secondary diabetes codes in relationship to codes for the cause of the diabetes is based on the Tabular List instructions for categories E08, E09 and E13.

Chapter 4: Endocrine, Nutritional, and Metabolic Diseases (E00 -E89)

(i) Secondary diabetes mellitus due to pancreatectomy For postpancreatectomy diabetes mellitus (lack of insulin due to the surgical removal of all or part of the pancreas), assign code E89.1, Postprocedural hypoinsulinemia. Assign a code from category E13 as the principal or first- listed diagnosis and a code from subcategory Z90.41, Acquired absence of pancreas, as an additional code. (ii) Secondary diabetes due to drugs Secondary diabetes may be caused by an adverse effect of correctly administered medications, poisoning or sequela of poisoning. See section I.C.19.e. for coding of adverse effects and poisoning, and section I.C.20 for external cause code reporting.

Chapter 15: Pregnancy, Childbirth, and the Puerperium (O00-O9A)

g. Diabetes mellitus in pregnancy Diabetes mellitus is a significant complicating factor in pregnancy. Pregnant patients who are diabetic should be assigned a code from category O24, Diabetes mellitus in pregnancy, childbirth, and the puerperium, first, followed by the appropriate diabetes code(s) (E08-E13) from Chapter 4.

Verify Before Coding

  • Questionable admission. The Medicare Code Editor lists this among its questionable-admission codes: reported as the principal diagnosis, it is not usually sufficient justification for an inpatient admission on its own, so it flags the admission as questionable. The code itself remains acceptable as principal.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name E13.9 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 22 Excludes1 notes across 8 chapters: E08 — Diabetes mellitus due to underlying condition (via E13.-), E09 — Drug or chemical induced diabetes mellitus (via E13.-), E10 — Type 1 diabetes mellitus (via E13.-), E11 — Type 2 diabetes mellitus (via E13.-), E74 — Other disorders of carbohydrate metabolism (via E13.-), G54.5 — Neuralgic amyotrophy (via E13.-), G59 — Mononeuropathy in diseases classified elsewhere (via E13.-), G63 — Polyneuropathy in diseases classified elsewhere (via E13.-), G99.0 — Autonomic neuropathy in diseases classified elsewhere (via E13.-), H20.0 — Acute and subacute iridocyclitis (via E13.-), I73.8 — Other specified peripheral vascular diseases (via E13.-), I79.8 — Other disorders of arteries, arterioles and capillaries in diseases classified elsewhere (via E13.-), L92.1 — Necrobiosis lipoidica, not elsewhere classified (via E13.-), L99 — Other disorders of skin and subcutaneous tissue in diseases classified elsewhere (via E13.-), M14 — Arthropathies in other diseases classified elsewhere (via E13.-), M14.6 — Charcôt's joint (via E13.-), M90 — Osteopathies in diseases classified elsewhere (via E13.-), N08 — Glomerular disorders in diseases classified elsewhere (via E13.-), N16 — Renal tubulo-interstitial disorders in diseases classified elsewhere (via E13.-), N76.82 — Fournier disease of vagina and vulva (via E13.-), +2 more.

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 2 Excludes2 notes across 2 chapters: H35 — Other retinal disorders (via E13.-), I96 — Gangrene, not elsewhere classified (via E13.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Referenced by 2 Code First instructions across 2 chapters: D84.81 — Immunodeficiency due to conditions classified elsewhere (via E13.-), E89.1 — Postprocedural hypoinsulinemia (via E13.-).

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

Referenced by 1 Use Additional Code instruction: Z90.41 — Acquired absence of pancreas (via E13.-).

These codes instruct coders to additionally report this code when it applies.

Referenced by 1 Code Also instruction: N76.82 — Fournier disease of vagina and vulva (via E13.-).

These codes suggest coding this condition alongside when both are present.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 3 MS-DRGs: DRG 637 (MDC 10), DRG 638 (MDC 10), DRG 639 (MDC 10).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):END002 — Diabetes mellitus without complication (default); END006 — Diabetes mellitus, due to underlying condition, drug or chemical induced, or other specified type.

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Diabetes with Glycemic, Unspecified, or No Complications) for risk-adjusted payment.

E08.649 — Diabetes mellitus due to underlying condition with hypoglycemia without coma, E08.65 — Diabetes mellitus due to underlying condition with hyperglycemia, E08.8 — Diabetes mellitus due to underlying condition with unspecified complications, E08.9 — Diabetes mellitus due to underlying condition without complications, E10.649 — Type 1 diabetes mellitus with hypoglycemia without coma, E10.65 — Type 1 diabetes mellitus with hyperglycemia, E10.8 — Type 1 diabetes mellitus with unspecified complications, E10.9 — Type 1 diabetes mellitus without complications, E11.649 — Type 2 diabetes mellitus with hypoglycemia without coma, E11.65 — Type 2 diabetes mellitus with hyperglycemia, E11.8 — Type 2 diabetes mellitus with unspecified complications, E11.9 — Type 2 diabetes mellitus without complications, E13.649 — Other specified diabetes mellitus with hypoglycemia without coma, E13.65 — Other specified diabetes mellitus with hyperglycemia, E13.8 — Other specified diabetes mellitus with unspecified complications, Z79.4 — Long term (current) use of insulin

Related risk categories

These categories interact through CMS's HCC hierarchy — one can suppress the other's risk-adjustment weight when both are present on a claim.

Pancreas Transplant Status, Diabetes with Severe Acute Complications, Diabetes with Chronic Complications

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical categories (Diabetes mellitus without complication, Diabetes mellitus, due to underlying condition, drug or chemical induced, or other specified type).

E13.621 — Other specified diabetes mellitus with foot ulcer, E13.622 — Other specified diabetes mellitus with other skin ulcer, E13.628 — Other specified diabetes mellitus with other skin complications, E13.630 — Other specified diabetes mellitus with periodontal disease, E13.638 — Other specified diabetes mellitus with other oral complications, E13.641 — Other specified diabetes mellitus with hypoglycemia with coma, E13.649 — Other specified diabetes mellitus with hypoglycemia without coma, E13.65 — Other specified diabetes mellitus with hyperglycemia, E13.69 — Other specified diabetes mellitus with other specified complication, E13.8 — Other specified diabetes mellitus with unspecified complications, E89.1 — Postprocedural hypoinsulinemia, O24.011 — Pre-existing type 1 diabetes mellitus, in pregnancy, first trimester, O24.012 — Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester, O24.013 — Pre-existing type 1 diabetes mellitus, in pregnancy, third trimester, O24.019 — Pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimester, O24.02 — Pre-existing type 1 diabetes mellitus, in childbirth, O24.03 — Pre-existing type 1 diabetes mellitus, in the puerperium, O24.111 — Pre-existing type 2 diabetes mellitus, in pregnancy, first trimester, O24.112 — Pre-existing type 2 diabetes mellitus, in pregnancy, second trimester, O24.113 — Pre-existing type 2 diabetes mellitus, in pregnancy, third trimester, +309 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Diabetes, diabetic”; these codes share that main term but sit in a different category of the Tabular List.

E11.628 — Type 2 diabetes mellitus with other skin complications (with, skin complication NEC), E11.630 — Type 2 diabetes mellitus with periodontal disease (with, periodontal disease), E11.638 — Type 2 diabetes mellitus with other oral complications (with, oral complication NEC), E11.641 — Type 2 diabetes mellitus with hypoglycemia with coma (with, hypoglycemia, with coma), E11.649 — Type 2 diabetes mellitus with hypoglycemia without coma (with, hypoglycemia), E11.65 — Type 2 diabetes mellitus with hyperglycemia (with, hyperglycemia), E11.69 — Type 2 diabetes mellitus with other specified complication (with, osteomyelitis), E11.8 — Type 2 diabetes mellitus with unspecified complications (with, complication), E11.9 — Type 2 diabetes mellitus without complications, E11.A — Type 2 diabetes mellitus without complications in remission (without complications in remission), E23.2 — Diabetes insipidus (insipidus), E83.110 — Hereditary hemochromatosis (bronzed), E83.39 — Other disorders of phosphorus metabolism (phosphate), N25.1 — Nephrogenic diabetes insipidus (insipidus, nephrogenic), O24.410 — Gestational diabetes mellitus in pregnancy, diet controlled (gestational, diet controlled), O24.414 — Gestational diabetes mellitus in pregnancy, insulin controlled (gestational, insulincontrolled), O24.415 — Gestational diabetes mellitus in pregnancy, controlled by oral hypoglycemic drugs (gestational, oral drug controlled), O24.419 — Gestational diabetes mellitus in pregnancy, unspecified control (gestational), O24.420 — Gestational diabetes mellitus in childbirth, diet controlled (gestational, in childbirth, diet controlled), O24.424 — Gestational diabetes mellitus in childbirth, insulin controlled (gestational, in childbirth, insulincontrolled), +192 more

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

HbA1c Test (Glycated Hemoglobin), Blood Glucose Test, Gamma-glutamyl Transferase (GGT) Test, Iron Panel, Lipid Panel, Thyroid Stimulating Hormone (TSH)

Contextual Map

Every relationship of E13.9 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run E13.9 with these 14 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes (22)

Referenced by Excludes2 notes

  • H35 — Other retinal disorders[Excludes2](via E13.-): “diabetic retinal disorders (E08.311-E08.359, E09.311-E09.359, E10.311-E10.359, E11.311-E11.359, E13.311-E13.359)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • I96 — Gangrene, not elsewhere classified[Excludes2](via E13.-): “gangrene in diabetes mellitus (E08-E13 with .52)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Referenced by Code First instructions

Referenced by Use Additional Code instructions

Referenced by Code Also instructions

Clinical classification (CCSR)

Risk adjustment (CMS-HCC)

  • HCC 38 — Diabetes with Glycemic, Unspecified, or No Complications [CMS-HCC]— CMS-HCC V28 · 2026

MS-DRG Grouper

MDC crossing

  • MDC 10 — Endocrine, Nutritional and Metabolic Diseases and Disorders[MDC crossing]: “Endocrine, Nutritional and Metabolic Diseases and Disorders — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 5,013 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Diabetes, diabetic (mellitus) (sugar), hepatogenous[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Diabetes, diabetic (mellitus) (sugar), specified type NEC[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes (40)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Indexed Clinical Terms (2)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Common coding questions

MedCoder editorial

Is E13.9 the code for postpancreatectomy diabetes?

E13 is the right family — “postpancreatectomy diabetes mellitus” and “postprocedural diabetes mellitus” are category Includes terms — and E13.9 is its without-complications default. The full scenario, including the E89.1 and Z90.41- companions, is walked in How do I code postpancreatectomy diabetes mellitus?.

Can E13.9 be reported with E10.-?

No — type 1 diabetes mellitus (E10.-) is an Excludes1 on the E13 category, as are the E08 and E09 secondary forms. The secondary-diabetes families are split by cause; see How do I code secondary diabetes?.

Should diabetes medication use be coded with E13.9?

Yes, when documented — the category’s Use Additional Code note asks for the control regimen: insulin (Z79.4), oral antidiabetic drugs (Z79.84), or injectable non-insulin antidiabetic drugs (Z79.85).

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Coding guidelines Official source data
ICD-10-CM Official Guidelines for Coding and Reporting (FY2027), quoted by section Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44 Release, file and checksum · Publisher’s page
Risk adjustment Official source data
2026 Mid-Year Final ICD-10 Mappings + Model Software (cms.gov/files/zip/2026-midyear-final-icd-10-mappings.zip, 2026-midyear-final-model-software.zip) — CMS-HCC V28, PY2026 mid-year final release Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder-derived relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder editorial explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "E13.9 — Other specified diabetes mellitus without complications." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/e13.9-other-specified-diabetes-mellitus-without-complications

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Other specified diabetes mellitus without complications

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to E13.9 in its code family, with their registry titles.

View all codes in the E13 family