F81.2
Mathematics disorder
F81.2 (also written F812) is a billable ICD-10-CM diagnosis code for mathematics disorder. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 5 codes in category F81 (Specific developmental disorders of scholastic skills). The Alphabetic Index lists it under 9 entries. Its coding notes include 1 Excludes1 entry and 4 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- acalculia NOS (R48.8)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
IPF Primary
IPF MS-DRG adjustment. A principal diagnosis of this code groups to this MS-DRG:
| MS-DRG | Description | Factor |
|---|---|---|
| 886 | Behavioral & developmental disorders | 1.07 |
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- disorders of psychological development
Inclusion terms
Conditions classified to this code.
- Developmental acalculia
- Developmental arithmetical disorder
- Developmental Gerstmann's syndrome
- Specific learning disorder, with impairment in mathematics
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 9 entries
- 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