F81.81
Disorder of written expression
F81.81 (also written F8181) is a billable ICD-10-CM diagnosis code for disorder of written expression. 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 15 entries. Its coding notes include 1 Excludes2 entry.
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.
- Specific learning disorder, with impairment in written expression
- Specific spelling disorder
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 15 entries
- Agraphia (absolute), developmental
- Delay, delayed, development, spelling
- Development, delayed, spelling
- Development, delayed, written expression
- Difficult, difficulty (in), spelling (specific)
- Disability, disabilities, spelling, specific
- Disorder (of), developmental, expressive writing
- Disorder (of), developmental, written expression
- Disorder (of), learning (specific), specified, with impairment in, written expression
- Disorder (of), learning (specific), spelling
- Disorder (of), learning (specific), written expression
- Disorder (of), specific, spelling