F81.2 vs R48.8
F81.2 (Mathematics disorder) compared with R48.8 (Other symbolic dysfunctions), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. F81.2 carries an Excludes1 note covering R48.8: “acalculia NOS (R48.8)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. R48.8 carries an Excludes1 note covering F81.2: “specific developmental disorders of scholastic skills (F81.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| F81.2Mathematics disorder | R48.8Other symbolic dysfunctions | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Mathematics disorder is a billable ICD-10-CM diagnosis code (F81.2). | Other symbolic dysfunctions is a billable ICD-10-CM diagnosis code (R48.8). |
| Includes | Developmental acalculia Developmental arithmetical disorder Developmental Gerstmann's syndrome Specific learning disorder, with impairment in mathematics | Acalculia Agraphia |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources