ICD-10-CM 2027
ICD-10 code for reading disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › reading”. Page updated September 29, 2026.
About coding reading disorder
The ICD-10-CM code for reading disorder is R48.0 (Dyslexia and alexia). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on R48.0.
Within R48 (dyslexia and other symbolic dysfunctions, not elsewhere classified), R48.0 is specifically for dyslexia and alexia. Related codes cover agnosia (R48.1), apraxia (R48.2), visual agnosia (R48.3), other symbolic dysfunctions (R48.8) and unspecified symbolic dysfunctions (R48.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 886 (Behavioral and Developmental Disorders, relative weight 1.8678), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific reading disorder codes (official index)
- developmental (specific) F81.0 — Specific reading disorder
Common questions about reading disorder ICD-10 codes
What is the ICD-10 code for reading disorder?
- R48.0 — Dyslexia and alexia. More specific codes apply when the documentation supports them: F81.0.
What is the ICD-10 code for developmental reading disorder?
- F81.0 — Specific reading disorder.
Is R48.0 billable?
- Yes. R48.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R48.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R48.0 as a principal diagnosis.
Is R48.0 a CC or MCC?
- No. R48.0 is neither a CC nor an MCC under MS-DRG v44.0.