U.S. ICD-10-CM · FY 2027

F81.2 ICD-10-CM Code: Mathematics disorder

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

F81.2

Mathematics disorder

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where F81.2 sits

  1. 1

    Chapter 5

    Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

  2. 2

    Section

    Pervasive and specific developmental disorders (F80-F89)

  3. 3

    Category F81

    Specific developmental disorders of scholastic skills

  4. 4

    Code F81.2

    Mathematics disorder

Documentation details

Notes for this code

Inclusion terms

  • Developmental acalculia
  • Developmental arithmetical disorder
  • Developmental Gerstmann's syndrome
  • Specific learning disorder, with impairment in mathematics

Code first

No “code first” instruction is listed for F81.2.

Use additional code

No “use additional code” instruction is listed for F81.2.

Excludes1

Conditions that should not be reported together with this code.

  • acalculia NOS (R48.8)

Excludes2

Conditions not included here that may be reported separately when present.

  • arithmetical difficulties associated with a reading disorder (F81.0)
  • arithmetical difficulties associated with a spelling disorder (F81.81)
  • arithmetical difficulties due to inadequate teaching (Z55.8)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code F81.2 mean?

F81.2 is the FY 2027 U.S. ICD-10-CM code for “Mathematics disorder.”

Is F81.2 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, F81.2 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is F81.2 located in ICD-10-CM?

F81.2 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Pervasive and specific developmental disorders (F80-F89) (F80–F89), under category F81, Specific developmental disorders of scholastic skills.

What coding notes are listed for F81.2?

Its listed inclusion terms are Developmental acalculia; Developmental arithmetical disorder; Developmental Gerstmann's syndrome; Specific learning disorder, with impairment in mathematics. No code-first instruction is listed. Excludes1 notes: acalculia NOS (R48.8). Excludes2 notes: arithmetical difficulties associated with a reading disorder (F81.0); arithmetical difficulties associated with a spelling disorder (F81.81); arithmetical difficulties due to inadequate teaching (Z55.8).

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