I62.1 ICD-10-CM Code: Nontraumatic extradural hemorrhage

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for I62.1 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on I62.1 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for I62.1

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

Before you code I62.1

1. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with I62.1. 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 I62.1’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.

   ReviewS06

Consider I62.1. 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 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.

Official instructions as workflow

• Excludes1 — check before selecting I62.1(1 note)

  Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with I62.1: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

  CompareS06

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

• Excludes2 — not part of I62.1(1 note)

  Coding workflow: The conditions named in this note are not included in I62.1. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareI69.2

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

• Use Additional Code — after identifying I62.1(9 notes)

  Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with I62.1 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

  ReviewR29.7, F10, Z77.22, Z87.891, Z57.31, F17

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

Coding decision scenarios

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

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.

Indexed Clinical Terms (4)

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.

• Hemorrhage, hemorrhagic (concealed), epidural (traumatic), nontraumatic
• Hemorrhage, hemorrhagic (concealed), extradural (traumatic), nontraumatic
• Hemorrhage, hemorrhagic (concealed), intracranial (nontraumatic), epidural, nontraumatic
• Hemorrhage, hemorrhagic (concealed), intracranial (nontraumatic), extradural, nontraumatic

Don’t confuse I62.1 with…

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

The codes most likely to be picked instead of I62.1 — 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.

• S06— 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 traumatic intracranial hemorrhage moves the case to S06; the two are not reported together unless documented as unrelated.

  Full comparison: I62.1 vs S06 →

• I62.9— 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 “Nontraumatic intracranial hemorrhage, unspecified” takes I62.9; specificity in the record moves it back here.

  Full comparison: I62.1 vs I62.9 →

• I69.2— 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 sequelae of intracranial hemorrhage adds I69.2; it is not part of this code and both may be reported when both are documented.

  Full comparison: I62.1 vs I69.2 →

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.

Decision Points

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

1. 9 Use Additional Code instructions — report the named additional code(s) when the documentation supports them. See the Use Additional Code notes
2. 1 Excludes1 entry — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 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

• MCC as a secondary diagnosis (FY2026). Can raise the stay's MS-DRG severity tier.

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 structured relationships — computed from published CMS and AHRQ datasets

Other codes that name I62.1 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: G31.84 — Mild cognitive impairment of uncertain or unknown etiology (via I62.-).

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: I10 — Essential (primary) hypertension (via I62.-), I15 — Secondary hypertension (via I62.-).

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: G46 — Vascular syndromes of brain in cerebrovascular diseases (via I62.-), R29.7 — National Institutes of Health Stroke Scale (NIHSS) score (via I62.-).

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 Code Also instruction: I16.1 — Hypertensive emergency (via I62.-).

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

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: MCC — Major Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 306 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 8 MS-DRGs: DRG 020 (MDC 01), DRG 021 (MDC 01), DRG 022 (MDC 01), DRG 064 (MDC 01), DRG 065 (MDC 01), DRG 066 (MDC 01), DRG 791 (MDC 15), DRG 793 (MDC 15).

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

Clinical classification (AHRQ CCSR):CIR021 — Acute hemorrhagic cerebrovascular disease (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 (Intracranial Hemorrhage) for risk-adjusted payment.

I61.3 — Nontraumatic intracerebral hemorrhage in brain stem, I61.4 — Nontraumatic intracerebral hemorrhage in cerebellum, I61.5 — Nontraumatic intracerebral hemorrhage, intraventricular, I61.6 — Nontraumatic intracerebral hemorrhage, multiple localized, I61.8 — Other nontraumatic intracerebral hemorrhage, I61.9 — Nontraumatic intracerebral hemorrhage, unspecified, I62.00 — Nontraumatic subdural hemorrhage, unspecified, I62.01 — Nontraumatic acute subdural hemorrhage, I62.02 — Nontraumatic subacute subdural hemorrhage, I62.03 — Nontraumatic chronic subdural hemorrhage, I62.9 — Nontraumatic intracranial hemorrhage, unspecified, P10.0 — Subdural hemorrhage due to birth injury, P10.1 — Cerebral hemorrhage due to birth injury, P10.2 — Intraventricular hemorrhage due to birth injury, P10.3 — Subarachnoid hemorrhage due to birth injury, P10.4 — Tentorial tear due to birth injury, P10.8 — Other intracranial lacerations and hemorrhages due to birth injury, P10.9 — Unspecified intracranial laceration and hemorrhage due to birth injury, P11.0 — Cerebral edema due to birth injury, P11.1 — Other specified brain damage due to birth injury, +32 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.

Ischemic or Unspecified Stroke

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Acute hemorrhagic cerebrovascular disease).

I60.51 — Nontraumatic subarachnoid hemorrhage from right vertebral artery, I60.52 — Nontraumatic subarachnoid hemorrhage from left vertebral artery, I60.6 — Nontraumatic subarachnoid hemorrhage from other intracranial arteries, I60.7 — Nontraumatic subarachnoid hemorrhage from unspecified intracranial artery, I60.8 — Other nontraumatic subarachnoid hemorrhage, I60.9 — Nontraumatic subarachnoid hemorrhage, unspecified, I61.0 — Nontraumatic intracerebral hemorrhage in hemisphere, subcortical, I61.1 — Nontraumatic intracerebral hemorrhage in hemisphere, cortical, I61.2 — Nontraumatic intracerebral hemorrhage in hemisphere, unspecified, I61.3 — Nontraumatic intracerebral hemorrhage in brain stem, I61.4 — Nontraumatic intracerebral hemorrhage in cerebellum, I61.5 — Nontraumatic intracerebral hemorrhage, intraventricular, I61.6 — Nontraumatic intracerebral hemorrhage, multiple localized, I61.8 — Other nontraumatic intracerebral hemorrhage, I61.9 — Nontraumatic intracerebral hemorrhage, unspecified, I62.00 — Nontraumatic subdural hemorrhage, unspecified, I62.01 — Nontraumatic acute subdural hemorrhage, I62.02 — Nontraumatic subacute subdural hemorrhage, I62.03 — Nontraumatic chronic subdural hemorrhage, I62.9 — Nontraumatic intracranial hemorrhage, unspecified, +12 more

Same Index main term, other category

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

I60.9 — Nontraumatic subarachnoid hemorrhage, unspecified (intracranial, subarachnoid), I61.0 — Nontraumatic intracerebral hemorrhage in hemisphere, subcortical (basilar), I61.1 — Nontraumatic intracerebral hemorrhage in hemisphere, cortical (cortical), I61.2 — Nontraumatic intracerebral hemorrhage in hemisphere, unspecified (intracranial, intracerebral, hemisphere), I61.3 — Nontraumatic intracerebral hemorrhage in brain stem (medulla), I61.4 — Nontraumatic intracerebral hemorrhage in cerebellum (cerebellar, cerebellum), I61.5 — Nontraumatic intracerebral hemorrhage, intraventricular (bulbar), I61.6 — Nontraumatic intracerebral hemorrhage, multiple localized (intracranial, intracerebral, multiple localized), I61.8 — Other nontraumatic intracerebral hemorrhage (posterior fossa), I61.9 — Nontraumatic intracerebral hemorrhage, unspecified (intracranial, intracerebral), I78.8 — Other diseases of capillaries (capillary), I85.01 — Esophageal varices with bleeding (esophagus, varix), I85.11 — Secondary esophageal varices with bleeding (esophagus, varix, secondary), J35.8 — Other chronic diseases of tonsils and adenoids (tonsil), J36 — Peritonsillar abscess (peritonsillar tissue, due to infection), J95.01 — Hemorrhage from tracheostomy stoma (from, tracheostomy stoma), K06.8 — Other specified disorders of gingiva and edentulous alveolar ridge (gum), K08.89 — Other specified disorders of teeth and supporting structures (alveolus), K13.79 — Other lesions of oral mucosa (mouth), K14.8 — Other diseases of tongue (tongue), +147 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.

Partial Thromboplastin Time (PTT) Test, Prothrombin Time Test and INR (PT/INR)

Contextual Map

Every relationship of I62.1 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 I62.1 with these 6 related codes in Claim Check

Hierarchy

• I00-I99 — Chapter 9: Diseases of the Circulatory System (I00-I99) (I00-I99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• I60-I69 — Cerebrovascular diseases[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes1 notes

• G31.84 — Mild cognitive impairment of uncertain or unknown etiology[Excludes1](via I62.-): “cerebrovascular diseases (I60-I69)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes2 notes

• I10 — Essential (primary) hypertension[Excludes2](via I62.-): “essential (primary) hypertension involving vessels of brain (I60-I69)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• I15 — Secondary hypertension[Excludes2](via I62.-): “secondary hypertension involving vessels of brain (I60-I69)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Code First instructions

• G46 — Vascular syndromes of brain in cerebrovascular diseases[Code First](via I62.-): “underlying cerebrovascular disease (I60-I69)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• R29.7 — National Institutes of Health Stroke Scale (NIHSS) score[Code First](via I62.-): “the type of cerebral infarction (I60.-, I61.-, I62.-, I63.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Code Also instructions

• I16.1 — Hypertensive emergency[Code Also](via I62.-): “cerebral hemorrhage (I60.-. I61.-, I62.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

• CIR021 — Acute hemorrhagic cerebrovascular disease[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

Risk adjustment (CMS-HCC)

• HCC 248 — Intracranial Hemorrhage [CMS-HCC]: “Intracranial Hemorrhage — supersedes HCC 249 (Ischemic or Unspecified Stroke)”— CMS-HCC V28 · 2026

MS-DRG Grouper

• MCC — Major Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (MCC).”— CMS MS-DRG Definitions Manual (Appendix C) · FY2026
• DRG 020 — INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH MCC[MS-DRG]: “INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH MCC (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 021 — INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH CC[MS-DRG]: “INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH CC (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 022 — INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITHOUT CC/MCC[MS-DRG]: “INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITHOUT CC/MCC (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 064 — INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITH MCC[MS-DRG]: “INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITH MCC (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 065 — INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITH CC OR TPA IN 24 HOURS[MS-DRG]: “INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITH CC OR TPA IN 24 HOURS (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 066 — INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITHOUT CC/MCC[MS-DRG]: “INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITHOUT CC/MCC (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 791 — PREMATURITY WITH MAJOR PROBLEMS[MS-DRG]: “PREMATURITY WITH MAJOR PROBLEMS (MDC 15)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• and 1 more

MDC crossing

• MDC 01 — Diseases and Disorders of the Nervous System[MDC crossing]: “Diseases and Disorders of the Nervous System — 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. 8,892 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026
• MDC 15 — Newborns and Other Neonates with Conditions Originating in Perinatal Period[MDC crossing]: “Newborns and Other Neonates with Conditions Originating in Perinatal Period — 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.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

• Hemorrhage, hemorrhagic (concealed), epidural (traumatic), nontraumatic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Hemorrhage, hemorrhagic (concealed), extradural (traumatic), nontraumatic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Hemorrhage, hemorrhagic (concealed), intracranial (nontraumatic), epidural, nontraumatic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Hemorrhage, hemorrhagic (concealed), intracranial (nontraumatic), extradural, nontraumatic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes

• I62 — Other and unspecified nontraumatic intracranial hemorrhage[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• I62.0 — Nontraumatic subdural hemorrhage[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• I62.00 — Nontraumatic subdural hemorrhage, unspecified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• I62.01 — Nontraumatic acute subdural hemorrhage[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• I62.02 — Nontraumatic subacute subdural hemorrhage[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• I62.03 — Nontraumatic chronic subdural hemorrhage[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• I62.9 — Nontraumatic intracranial hemorrhage, unspecified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Change history

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

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 FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 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 — v43 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 structured 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 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.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to I62.1 in its code family, with their registry titles.

• I62 — Other and unspecified nontraumatic intracranial hemorrhage
• I62.0 — Nontraumatic subdural hemorrhage
• I62.00 — Nontraumatic subdural hemorrhage, unspecified
• I62.01 — Nontraumatic acute subdural hemorrhage
• I62.02 — Nontraumatic subacute subdural hemorrhage
• I62.03 — Nontraumatic chronic subdural hemorrhage
• I62.9 — Nontraumatic intracranial hemorrhage, unspecified

View all codes in the I62 family