2026 ICD-10-CM Diagnosis Code F81.2Mathematics disorder
ICD-10-CM Codes›F01–F99›F80-F89›F81
- Billable — Valid for Submission
- Chronic Condition
F81.2 is a billable ICD-10-CM diagnosis code for mathematics disorder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as basic learning problem. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurodevelopmental disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Basic learning problem
- Basic learning problem in arithmetic
- Developmental arithmetic disorder
- Difficulty reasoning
- Difficulty using arithmetic reasoning
- Finding related to ability to use arithmetic reasoning
- Specific number difficulty
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Developmental acalculia
- Developmental arithmetical disorder
- Developmental Gerstmann's syndrome
- Specific learning disorder, with impairment in mathematics
Type 1 Excludes
- acalculia NOS R48.8
Type 2 Excludes
- 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
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- developmental - F81.2
- delayed - See Also: Delay, development; - R62.50
- arithmetical skills - F81.2
- Disorder (of) - See Also: Disease;
- developmental - F89
- arithmetical skills - F81.2
- arithmetical - F81.2
- mathematics - F81.2
- mathematics - F81.2
- specific
- arithmetical - F81.2
- Dyscalculia - R48.8
- developmental - F81.2
- Gerstmann's syndrome - R48.8
- developmental - F81.2
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Acalculia
- developmental
- Development
- delayed
- arithmetical skills
- Disorder(of)
- developmental
- arithmetical skills
- Disorder(of)
- developmental
- learning
- arithmetical
- Disorder(of)
- learning (specific)
- mathematics
- Disorder(of)
- learning (specific)
- specified
- with impairment in
- mathematics
- Disorder(of)
- specific
- arithmetical
- Dyscalculia
- developmental
- Gerstmann's syndrome
- developmental
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Learning Disabilities
Learning disabilities are conditions that affect the ability to learn. They can cause problems with:
The full article covers:
- What is a learning disability?
- What causes learning disabilities?
- How are learning disabilities diagnosed?
- What are the treatments for learning disabilities?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert F81.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F81.2Overview
Is F81.2 (Specific developmental disorders of scholastic skills) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report mathematics disorder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What is the ICD-9 equivalent of F81.2?
Under the General Equivalence Mappings, mathematics disorder converts to ICD-9-CM 315.1 (mathematics disorder). The mapping is a direct match.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
