ICD-10-CM 2027
ICD-10 code for Mirror writing
From the official ICD-10-CM alphabetic index entry “Mirror writing”. Page updated September 29, 2026.
About coding Mirror writing
The ICD-10-CM code for Mirror writing is F81.0 (Specific reading disorder).
Within F81 (specific developmental disorders of scholastic skills), F81.0 is specifically for specific reading disorder. Related codes cover Mathematics disorder (F81.2), other developmental disorders of scholastic skills (F81.8) and developmental disorder of scholastic skills, unspecified (F81.9).
Don't report F81.0 together with the conditions in its Excludes1 note: alexia NOS (R48.0) and dyslexia NOS (R48.0).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for F81.0)
Common questions about Mirror writing ICD-10 codes
What is the ICD-10 code for Mirror writing?
- F81.0 — Specific reading disorder.
Is F81.0 billable?
- Yes. F81.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F81.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F81.0 as a principal diagnosis.
Is F81.0 a CC or MCC?
- No. F81.0 is neither a CC nor an MCC under MS-DRG v44.0.