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I60.02 ICD-10-CM Code: Nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation

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

Coding at a Glance

Tabular directives
2 Excludes1 · 1 Excludes2 · 9 use-additional codes
Risk adjustment
CMS-HCC V28: 1 category · CMS-HCC V22 category 99

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 020 — INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH MCC (MDC 01)
  • MS-DRG 021 — INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH CC (MDC 01)
  • MS-DRG 022 — INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITHOUT CC/MCC (MDC 01)
  • MS-DRG 023 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR (MDC 01)
  • MS-DRG 024 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC (MDC 01)
  • MS-DRG 064 — INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITH MCC (MDC 01)
  • MS-DRG 065 — INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITH CC OR TPA IN 24 HOURS (MDC 01)
  • MS-DRG 066 — INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITHOUT CC/MCC (MDC 01)
  • MS-DRG 791 — PREMATURITY WITH MAJOR PROBLEMS (MDC 15)
  • MS-DRG 793 — FULL TERM NEONATE WITH MAJOR PROBLEMS (MDC 15)

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 248 — Intracranial Hemorrhage (supersedes HCC 249)

Other models: CMS-HCC V22 HCC 99

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 I60.02 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 I60.02 itself; “inherited from” names the category or block whose note applies here.

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).

Excludes2 — Not Included Here

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

Source: inherited from I60

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-) inherited from I60
  • Use additional code to identify presence of:
  • alcohol abuse and dependence (F10.-) inherited from I60-I69
  • exposure to environmental tobacco smoke (Z77.22) inherited from I60-I69
  • history of tobacco dependence (Z87.891) inherited from I60-I69
  • hypertension (I10-I1A) inherited from I60-I69
  • occupational exposure to environmental tobacco smoke (Z57.31) inherited from I60-I69
  • tobacco dependence (F17.-) inherited from I60-I69
  • tobacco use (Z72.0) inherited from I60-I69

Coder workflow for I60.02

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

Before you code I60.02

  1. Laterality is coded in this family. Confirm the side documented — right, left, or bilateral — and select the matching code (this page’s code: left). The unspecified-side code applies only when the record states no side. Laterality is assigned from the documented side; where a bilateral code exists and both sides are documented, it is used instead of two unilateral codes (Guidelines I.B.13).

    ReviewI60.01 · right, I60.00 · unspecified

    Guide: Laterality coding →

  2. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with I60.02. 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 I60.02’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.

    ReviewA52.05, S06

  2. Is the side documented?
    Yes → Select the code for the documented side (or the bilateral code when both sides are documented and one exists).
    No → Use the unspecified-side code only when the record states no side; a query is the alternative.

    ReviewI60.01 · right, I60.00 · unspecified

Consider I60.02. 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).
Laterality
Right, left or bilateral as documented; unspecified only when the record states no side (Guidelines I.B.13).
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 I60.02(2 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with I60.02: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareA52.05, S06

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

  • Excludes2 — not part of I60.02(1 note)

    Coding workflow: The conditions named in this note are not included in I60.02. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareI69.0

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

  • Use Additional Code — after identifying I60.02(9 notes)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with I60.02 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

Documentation: Both the condition I60.02 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).

ReviewA52.05, S06

Documentation: The record documents the condition on one side only.

Coding question: Which code in this family applies?

Path: Select the sibling code for the documented side.

Reason: Laterality is assigned from the documented side; the unspecified-side code is for records that state no side (Guidelines I.B.13).

ReviewI60.01 · right, I60.00 · unspecified

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

Coding question: Is a second code reported with I60.02?

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).

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

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 I60.02 with…

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

The codes most likely to be picked instead of I60.02 — 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.

  • A52.05— 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 syphilitic ruptured cerebral aneurysm moves the case to A52.05; the two are not reported together unless documented as unrelated.

    Full comparison: I60.02 vs A52.05 →

  • 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: I60.02 vs S06 →

  • I60.00— 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 subarachnoid hemorrhage from unspecified carotid siphon and bifurcation” takes I60.00; specificity in the record moves it back here.

    Full comparison: I60.02 vs I60.00 →

  • I60.01— Laterality relationship (Review)

    Same condition; these differ only in which side is documented.

    The same condition on the other side; the documented side decides, and a bilateral code, where one exists, replaces the pair when both sides are documented.

    What moves you there: A documented right side moves the case to I60.01.

    Full comparison: I60.02 vs I60.01 →

  • I69.0— 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 subarachnoid hemorrhage adds I69.0; it is not part of this code and both may be reported when both are documented.

    Full comparison: I60.02 vs I69.0 →

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.

Code Overview

Nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation is a billable ICD-10-CM diagnosis code (I60.02).

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

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 9: Diseases of the Circulatory System (I00 -I99)

4) Hypertensive Cerebrovascular Disease For hypertensive cerebrovascular disease, first assign the appropriate code from categories I60-I69, followed by the appropriate hypertension code.

Chapter 9: Diseases of the Circulatory System (I00 -I99)

1) Category I69, Sequelae of Cerebrovascular disease Category I69 is used to indicate conditions classifiable to categories I60- I67 as the causes of sequela (neurologic deficits), themselves classified elsewhere. These “late effects” include neurologic deficits that persist after initial onset of conditions classifiable to categories I60-I67. The neurologic deficits caused by cerebrovascular disease may be present from the onset or may arise at any time after the onset of the condition classifiable to categories I60-I67.

Chapter 9: Diseases of the Circulatory System (I00 -I99)

2) Codes from category I69 with codes from I60-I67 Codes from category I69 may be assigned on a health care record with codes from I60-I67, if the patient has a current cerebrovascular disease and deficits from an old cerebrovascular disease.

Chapter 18: Symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

i. NIHSS Stroke Scale The NIH stroke scale (NIHSS) codes (R29.7- -) can be used in conjunction with acute stroke codes (I60-I63) to identify the patient's neurological status and the severity of the stroke. The stroke scale codes should be sequenced after the acute stroke diagnosis code(s).

Decision Points

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

  1. Laterality is coded in this family. Confirm the documented side matches the code — the opposite-side siblings are in the relationships section. See the opposite-side sibling codes
  2. 9 Use Additional Code instructions — report the named additional code(s) when the documentation supports them. See the Use Additional Code notes
  3. 2 Excludes1 entries — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 notes
  4. 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 (FY2027). 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 I60.02 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 I60.-).

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 I60.-), I15 — Secondary hypertension (via I60.-).

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 I60.-), R29.7 — National Institutes of Health Stroke Scale (NIHSS) score (via I60.-).

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 I60.-).

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: 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 10 MS-DRGs: DRG 020 (MDC 01), DRG 021 (MDC 01), DRG 022 (MDC 01), DRG 023 (MDC 01), DRG 024 (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 condition, opposite side

Same category and title, differing only in which side of the body is affected.

I60.00 — Nontraumatic subarachnoid hemorrhage from unspecified carotid siphon and bifurcation (unspecified)Compare I60.02 vs I60.00 →, I60.01 — Nontraumatic subarachnoid hemorrhage from right carotid siphon and bifurcation (right)Compare I60.02 vs I60.01 →

Same CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Intracranial Hemorrhage) for risk-adjusted payment.

I60.00 — Nontraumatic subarachnoid hemorrhage from unspecified carotid siphon and bifurcation, I60.01 — Nontraumatic subarachnoid hemorrhage from right carotid siphon and bifurcation, I60.10 — Nontraumatic subarachnoid hemorrhage from unspecified middle cerebral artery, I60.11 — Nontraumatic subarachnoid hemorrhage from right middle cerebral artery, I60.12 — Nontraumatic subarachnoid hemorrhage from left middle cerebral artery, I60.2 — Nontraumatic subarachnoid hemorrhage from anterior communicating artery, I60.30 — Nontraumatic subarachnoid hemorrhage from unspecified posterior communicating artery, I60.31 — Nontraumatic subarachnoid hemorrhage from right posterior communicating artery, I60.32 — Nontraumatic subarachnoid hemorrhage from left posterior communicating artery, I60.4 — Nontraumatic subarachnoid hemorrhage from basilar artery, I60.50 — Nontraumatic subarachnoid hemorrhage from unspecified vertebral artery, 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, +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).

I60.00 — Nontraumatic subarachnoid hemorrhage from unspecified carotid siphon and bifurcation, I60.01 — Nontraumatic subarachnoid hemorrhage from right carotid siphon and bifurcation, I60.10 — Nontraumatic subarachnoid hemorrhage from unspecified middle cerebral artery, I60.11 — Nontraumatic subarachnoid hemorrhage from right middle cerebral artery, I60.12 — Nontraumatic subarachnoid hemorrhage from left middle cerebral artery, I60.2 — Nontraumatic subarachnoid hemorrhage from anterior communicating artery, I60.30 — Nontraumatic subarachnoid hemorrhage from unspecified posterior communicating artery, I60.31 — Nontraumatic subarachnoid hemorrhage from right posterior communicating artery, I60.32 — Nontraumatic subarachnoid hemorrhage from left posterior communicating artery, I60.4 — Nontraumatic subarachnoid hemorrhage from basilar artery, I60.50 — Nontraumatic subarachnoid hemorrhage from unspecified vertebral artery, 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, +12 more

Same Index main term, other category

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

I25.3 — Aneurysm of heart (heart), I25.41 — Coronary artery aneurysm (coronary), I25.89 — Other forms of chronic ischemic heart disease (coronary, vein), I28.0 — Arteriovenous fistula of pulmonary vessels (arteriovenous, acquired, pulmonary), I28.1 — Aneurysm of pulmonary artery (lung), I31.2 — Hemopericardium, not elsewhere classified (pericardium, pericarditis), I33.0 — Acute and subacute infective endocarditis (mycotic, endocardial), I34.89 — Other nonrheumatic mitral valve disorders (mitral), I35.8 — Other nonrheumatic aortic valve disorders (aorta, aortic, valve), I51.89 — Other ill-defined heart diseases (heart), 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), I62.00 — Nontraumatic subdural hemorrhage, unspecified (intracranial, subdural), +203 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 I60.02 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 I60.02 with these 6 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes

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

Referenced by Code First instructions

Referenced by Code Also instructions

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

Clinical classification (CCSR)

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 (10)

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. 8,919 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Nearest codes (22)

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 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 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

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. "I60.02 — Nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/i60.02-nontraumatic-subarachnoid-hemorrhage-from-left-carotid-siphon-and-bifurcation

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation

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 I60.02 in its code family, with their registry titles.

View all codes in the I60 family