2027 ICD-10-CM Diagnosis Code R48.0Dyslexia and alexia
ICD-10-CM Codes›R00–R99›R47-R49›R48
- Billable — Valid for Submission
- Not Chronic
R48.0 is a billable ICD-10-CM diagnosis code for dyslexia and alexia. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 886. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nervous system signs and symptoms.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Alexia
- Alexia and agraphia present
- Aphasia, agnosia, dyslexia AND/OR apraxia
- Cluttering
- Cortical alexia
- Deep dyslexia
- Dyslexia
- Dyslexia AND/OR speech dysfunction
- Dyslogia
- Motor alexia
- Musical alexia
- Phonological dyslexia
- Subcortical alexia
- Surface dyslexia
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to R48.0: its own notes plus those printed at R48 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
- Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
- The conditions and signs or symptoms included in categories R00-R94 consist of:
- (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
- (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
- (c) provisional diagnosis in a patient who failed to return for further investigation or care;
- (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
- (e) cases in which a more precise diagnosis was not available for any other reason;
- (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name R48.0, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Alexia R48.0
Disorder (of) See Also: Disease;
Dyslexia R48.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Dyslexia
a cognitive disorder characterized by an impaired ability to comprehend written and printed words or phrases despite intact vision. this condition may be developmental or acquired. developmental dyslexia is marked by reading achievement that falls substantially below that expected given the individual's chronological age, measured intelligence, and age-appropriate education. the disturbance in reading significantly interferes with academic achievement or with activities of daily living that require reading skills. (from dsm-iv)
Patient EducationClinical
Learning Disabilities
Learning disabilities are conditions that affect the ability to learn. They can cause problems with:
The full article covers:
- What is a learning disability?
- What causes learning disabilities?
- How are learning disabilities diagnosed?
- What are the treatments for learning disabilities?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert R48.0 to ICD-9-CMHistory
Code HistoryHistory
Questions About R48.0Overview
What is the ICD-10 code for dyslexia and alexia?
The ICD-10-CM code for dyslexia and alexia is R48.0 (sometimes written as R480). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is R48.0 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report dyslexia and alexia on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does R48.0 group to?
When dyslexia and alexia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 886 (behavioral and Developmental Disorders), which carries a relative weight of 1.6455. Higher weights mean higher Medicare reimbursement.
Can R48.0 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the dyslexia and alexia is established, that condition takes the principal position instead.
Can R48.0 be reported with a code from F81?
Not as a rule. The Excludes1 note at R48, which applies to R48.0, lists "specific developmental disorders of scholastic skills (F81.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
