F02.C ICD-10-CM Code: Dementia in other diseases classified elsewhere, severe

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for F02.C 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 F02.C itself; “inherited from” names the category or block whose note applies here.

Don’t confuse F02.C with…

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

The codes most likely to be picked instead of F02.C — 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.

• F06.7— 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 mild neurocognitive disorder due to known physiological condition with or without behavioral disturbance moves the case to F06.7; the two are not reported together unless documented as unrelated.

  Full comparison: F02.C vs F06.7 →

• F02.8— 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 “Dementia in other diseases classified elsewhere, unspecified severity” takes F02.8; specificity in the record moves it back here.

  Full comparison: F02.C vs F02.8 →

• F10— 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 dementia in alcohol and psychoactive substance disorders adds F10; it is not part of this code and both may be reported when both are documented.

  Full comparison: F02.C vs F10 →

• F19— 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 dementia in alcohol and psychoactive substance disorders adds F19; it is not part of this code and both may be reported when both are documented.

  Full comparison: F02.C vs F19 →

• F01.5— 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 vascular dementia adds F01.5; it is not part of this code and both may be reported when both are documented.

  Full comparison: F02.C vs F01.5 →

• F01.A— 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 vascular dementia adds F01.A; it is not part of this code and both may be reported when both are documented.

  Full comparison: F02.C vs F01.A →

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. Sequencing: 25 Code First instructions — the underlying condition is sequenced before this code when present. See the Code First 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. 2 Excludes2 entries — 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

• Not billable as written — a more specific code is required: F02.C0, F02.C11, F02.C18, F02.C2, F02.C3.

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 F02.C 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 2 Excludes1 notes across 2 chapters: F06.7 — Mild neurocognitive disorder due to known physiological condition (via F02.-), G31.84 — Mild cognitive impairment of uncertain or unknown etiology (via F02.-).

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

Referenced by 3 Excludes2 notes: F06 — Other mental disorders due to known physiological condition (via F02.-), F63.1 — Pyromania (via F02.-), F63.2 — Kleptomania (via F02.-).

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

Contextual Map

Every relationship of F02.C 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 F02.C with these 5 related codes in Claim Check

Hierarchy

• F01-F99 — Chapter 5: Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) (F01-F99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2027
• F01-F09 — Mental disorders due to known physiological conditions[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2027

Referenced by Excludes1 notes

• F06.7 — Mild neurocognitive disorder due to known physiological condition[Excludes1](via F02.-): “dementia (F01.-, F02.-, F03.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
• G31.84 — Mild cognitive impairment of uncertain or unknown etiology[Excludes1](via F02.-): “dementia (F01.-, F02.-, F03.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Referenced by Excludes2 notes

• F06 — Other mental disorders due to known physiological condition[Excludes2](via F02.-): “dementia as classified in F01-F02”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
• F63.1 — Pyromania[Excludes2](via F02.-): “mental disorders due to known physiological condition (F01-F09)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
• F63.2 — Kleptomania[Excludes2](via F02.-): “stealing in mental disorders due to known physiological condition (F01-F09)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Nearest codes (32)

• F02 — Dementia in other diseases classified elsewhere[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2027
• F02.8 — Dementia in other diseases classified elsewhere, unspecified severity[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2027
• F02.80 — Dementia in other diseases classified elsewhere, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2027
• F02.81 — Dementia in other diseases classified elsewhere, unspecified severity, with behavioral disturbance[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2027
• F02.811 — Dementia in other diseases classified elsewhere, unspecified severity, with agitation[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2027
• F02.818 — Dementia in other diseases classified elsewhere, unspecified severity, with other behavioral disturbance[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2027
• F02.82 — Dementia in other diseases classified elsewhere, unspecified severity, with psychotic disturbance[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2027
• F02.83 — Dementia in other diseases classified elsewhere, unspecified severity, with mood disturbance[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2027
• and 24 more

Change history (4)

• FY2027 — Code First note added[Change history]— CMS release files (code change ledger) · icd10cm-fy2027
• and 3 more

Relevant guides

• Manifestation Codes: What Goes First, and Why It Can’t Be the Manifestation →

Common coding questions

MedCoder editorial

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

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

Nearest Codes in This Family

Official ICD-10-CM classifications closest to F02.C in its code family, with their registry titles.

• F02.B11 — Dementia in other diseases classified elsewhere, moderate, with agitation
• F02.B18 — Dementia in other diseases classified elsewhere, moderate, with other behavioral disturbance
• F02.B2 — Dementia in other diseases classified elsewhere, moderate, with psychotic disturbance
• F02.B3 — Dementia in other diseases classified elsewhere, moderate, with mood disturbance
• F02.B4 — Dementia in other diseases classified elsewhere, moderate, with anxiety
• F02.C0 — Dementia in other diseases classified elsewhere, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
• F02.C1 — Dementia in other diseases classified elsewhere, severe, with behavioral disturbance
• F02.C11 — Dementia in other diseases classified elsewhere, severe, with agitation
• F02.C18 — Dementia in other diseases classified elsewhere, severe, with other behavioral disturbance
• F02.C2 — Dementia in other diseases classified elsewhere, severe, with psychotic disturbance

View all codes in the F02 family