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D3A.091 ICD-10-CM Code: Benign carcinoid tumor of the thymus

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
1 Excludes2 · 2 use-additional codes · 1 code-also instruction
Risk adjustment
CMS-HCC V28: 1 category · RxHCC V08 category 22

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 any associated endocrine syndrome, such as:
  • carcinoid syndrome (E34.00)
Code alsoMay be needed with this code
  • any associated multiple endocrine neoplasia [MEN] syndromes (E31.2-)
Excludes2Not included here; may be reported together
  • benign pancreatic islet cell tumors (D13.7)

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.

  • MS-DRG 814 — RETICULOENDOTHELIAL AND IMMUNITY DISORDERS WITH MCC (MDC 16)
  • MS-DRG 815 — RETICULOENDOTHELIAL AND IMMUNITY DISORDERS WITH CC (MDC 16)
  • MS-DRG 816 — RETICULOENDOTHELIAL AND IMMUNITY DISORDERS WITHOUT CC/MCC (MDC 16)

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 22 — Bladder, Colorectal, and Other Cancers (supersedes HCC 23)

Other models: RxHCC V08 HCC 22

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 D3A.091 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 D3A.091 itself; “inherited from” names the category or block whose note applies here.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Source: inherited from D3A

Code Also

Additional codes that may be required to fully describe the encounter.

  • any associated multiple endocrine neoplasia [MEN] syndromes (E31.2-)

Source: inherited from D3A

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code to identify any associated endocrine syndrome, such as:
  • carcinoid syndrome (E34.00)

Source: inherited from D3A

Coder workflow for D3A.091

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

Before you code D3A.091

  1. Confirm the documented site and behavior (this code’s block classifies uncertain behavior neoplasms), whether the site is primary or secondary, and whether the malignancy is current or a personal history: a previously excised malignancy with no further treatment and no evidence of disease is history, not current disease. Verify the site against the Table of Neoplasms. Neoplasm chapter guidelines (Guidelines I.C.2.a, I.C.2.d, I.C.2.m).

    See the Table of Neoplasms entries · Guide: Active cancer vs history of cancer →

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).
Anatomical site
At the most specific level the record states; a site the classification separates cannot be assumed from a procedure or a measurement.
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.
Behavior and current-versus-history status
Malignant, in situ, benign or uncertain; primary or secondary; current disease or personal history (Guidelines I.C.2.m).

Official instructions as workflow

  • Excludes2 — not part of D3A.091(1 note)

    Coding workflow: The conditions named in this note are not included in D3A.091. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareD13.7

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

  • Use Additional Code — after identifying D3A.091(2 notes)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with D3A.091 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewE34.00

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

  • Code Also — related condition(1 note)

    Coding workflow: Review the related condition when both are documented and the instruction applies. A Code Also note does not fix sequencing; the order follows the circumstances of the encounter.

    ReviewE31.2

    See the official tabular notes · Guidelines I.A.17

Coding decision scenarios

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

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

Coding question: Is a second code reported with D3A.091?

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).

ReviewE34.00

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 D3A.091 with…

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

The codes most likely to be picked instead of D3A.091 — 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.

  • D3A.094— Specificity relationship (Review)

    Overlapping diagnoses in the same category.

    Overlapping codes in the same category — the documentation decides which is the more specific fit.

    What moves you there: A record that documents no more than “Benign carcinoid tumor of the foregut, unspecified” takes D3A.094; specificity in the record moves it back here.

    Full comparison: D3A.091 vs D3A.094 →

  • D13.7— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of benign pancreatic islet cell tumors adds D13.7; it is not part of this code and both may be reported when both are documented.

    Full comparison: D3A.091 vs D13.7 →

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

Benign carcinoid tumor of the thymus is a billable ICD-10-CM diagnosis code (D3A.091).

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

Decision Points

The directives on this code's own record, as a pre-claim checklist.

  1. 2 Use Additional Code instructions — report the named additional code(s) when the documentation supports them. See the Use Additional Code notes
  2. 1 Code Also note — a second code may apply; the guidelines leave its sequencing to the circumstances of the encounter. See the Code Also notes
  3. 1 Excludes2 entry — those conditions are not part of this code and may be reported additionally when documented. See the Excludes2 notes

Checklist rows are derived from this code's own official directives; the wording of each check is MedCoder editorial. The official notes themselves are in the sections each row links to.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

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 D3A.091 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 1 Excludes1 note: D15.0 — Benign neoplasm of thymus.

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

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 814 (MDC 16), DRG 815 (MDC 16), DRG 816 (MDC 16).

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

Clinical classification (AHRQ CCSR):NEO073 — Benign neoplasms (default).

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 (Bladder, Colorectal, and Other Cancers) for risk-adjusted payment.

D3A.010 — Benign carcinoid tumor of the duodenum, D3A.011 — Benign carcinoid tumor of the jejunum, D3A.012 — Benign carcinoid tumor of the ileum, D3A.019 — Benign carcinoid tumor of the small intestine, unspecified portion, D3A.020 — Benign carcinoid tumor of the appendix, D3A.021 — Benign carcinoid tumor of the cecum, D3A.022 — Benign carcinoid tumor of the ascending colon, D3A.023 — Benign carcinoid tumor of the transverse colon, D3A.024 — Benign carcinoid tumor of the descending colon, D3A.025 — Benign carcinoid tumor of the sigmoid colon, D3A.026 — Benign carcinoid tumor of the rectum, D3A.029 — Benign carcinoid tumor of the large intestine, unspecified portion, D3A.090 — Benign carcinoid tumor of the bronchus and lung, D3A.092 — Benign carcinoid tumor of the stomach, D3A.093 — Benign carcinoid tumor of the kidney, D3A.094 — Benign carcinoid tumor of the foregut, unspecified, D3A.095 — Benign carcinoid tumor of the midgut, unspecified, D3A.096 — Benign carcinoid tumor of the hindgut, unspecified, D3A.098 — Benign carcinoid tumors of other sites, D3A.8 — Other benign neuroendocrine tumors, +105 more

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.

Cancer Metastatic to Lung, Liver, Brain, and Other Organs; Acute Myeloid Leukemia Except Promyelocytic, Cancer Metastatic to Bone, Other and Unspecified Metastatic Cancer; Acute Leukemia Except Myeloid, Myelodysplastic Syndromes, Multiple Myeloma, and Other Cancers, Lung and Other Severe Cancers, Lymphoma and Other Cancers, Prostate, Breast, and Other Cancers and Tumors

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Benign neoplasms).

D3A.012 — Benign carcinoid tumor of the ileum, D3A.019 — Benign carcinoid tumor of the small intestine, unspecified portion, D3A.020 — Benign carcinoid tumor of the appendix, D3A.021 — Benign carcinoid tumor of the cecum, D3A.022 — Benign carcinoid tumor of the ascending colon, D3A.023 — Benign carcinoid tumor of the transverse colon, D3A.024 — Benign carcinoid tumor of the descending colon, D3A.025 — Benign carcinoid tumor of the sigmoid colon, D3A.026 — Benign carcinoid tumor of the rectum, D3A.029 — Benign carcinoid tumor of the large intestine, unspecified portion, D3A.090 — Benign carcinoid tumor of the bronchus and lung, D3A.092 — Benign carcinoid tumor of the stomach, D3A.093 — Benign carcinoid tumor of the kidney, D3A.094 — Benign carcinoid tumor of the foregut, unspecified, D3A.095 — Benign carcinoid tumor of the midgut, unspecified, D3A.096 — Benign carcinoid tumor of the hindgut, unspecified, D3A.098 — Benign carcinoid tumors of other sites, D3A.8 — Other benign neuroendocrine tumors, K31.7 — Polyp of stomach and duodenum, K63.5 — Polyp of colon, +252 more

Same Index main term, other category

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

D29.20 — Benign neoplasm of unspecified testis (Sertoli cell, unspecified site, male), D34 — Benign neoplasm of thyroid gland (Hurthle cell), D35.0 — Benign neoplasm of adrenal gland (adrenal, cortical), D37.8 — Neoplasm of uncertain behavior of other specified digestive organs (G cell, unspecified site), D37.9 — Neoplasm of uncertain behavior of digestive organ, unspecified (papillary, cystic), D38.1 — Neoplasm of uncertain behavior of trachea, bronchus and lung (intravascular bronchial alveolar), D39.0 — Neoplasm of uncertain behavior of uterus (stromal, endometrial), D39.1 — Neoplasm of uncertain behavior of ovary (granulosa cell), D39.10 — Neoplasm of uncertain behavior of unspecified ovary (Leydig cell, unspecified site, female), D39.2 — Neoplasm of uncertain behavior of placenta (placental site trophoblastic), D40.1 — Neoplasm of uncertain behavior of testis (testicular stromal), D40.10 — Neoplasm of uncertain behavior of unspecified testis (testicular), D41.0 — Neoplasm of uncertain behavior of kidney (juxtaglomerular), D44.3 — Neoplasm of uncertain behavior of pituitary gland (Rathke's pouch), D44.6 — Neoplasm of uncertain behavior of carotid body (carotid body), D44.7 — Neoplasm of uncertain behavior of aortic body and other paraganglia (aortic body), D47.09 — Other mast cell neoplasms of uncertain behavior (mast cell), D48.0 — Neoplasm of uncertain behavior of bone and articular cartilage (giant cell, bone), D48.19 — Other specified neoplasm of uncertain behavior of connective and other soft tissue (stromal, gastric), D48.5 — Neoplasm of uncertain behavior of skin (basal cell), +77 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.

Iron Panel

Contextual Map

Every relationship of D3A.091 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 D3A.091 with this related code in Claim Check

Hierarchy

Referenced by Excludes1 notes

Clinical classification (CCSR)

Risk adjustment (CMS-HCC)

  • HCC 22 — Bladder, Colorectal, and Other Cancers [CMS-HCC]: “Bladder, Colorectal, and Other Cancers — supersedes HCC 23 (Prostate, Breast, and Other Cancers and Tumors)”— CMS-HCC V28 · 2026

MS-DRG Grouper

MDC crossing

  • MDC 16 — Diseases and Disorders of Blood, Blood Forming Organs and Immunologic Disorders[MDC crossing]: “Diseases and Disorders of Blood, Blood Forming Organs and Immunologic 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. 1,615 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Tumor, carcinoid, benign, thymus[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes (26)

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 (1)

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.

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
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 28, 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. "D3A.091 — Benign carcinoid tumor of the thymus." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/d3a.091-benign-carcinoid-tumor-of-the-thymus

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Benign carcinoid tumor of the thymus

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 D3A.091 in its code family, with their registry titles.

View all codes in the D3A family