Back to ICD-10 codes
R48ICD-10-CM

Chapter 18 · R00–R99 · Symptoms, Signs & Abnormal Findings

Dyslexia and other symbolic dysfunctions, not elsewhere classified

R48 is the ICD10 code used for documenting Dyslexia and other symbolic dysfunctions, not elsewhere classified related to communication impairments and symbolic dysfunctions.

What R48 covers · when clinicians use it

ICD-10 code R48 identifies Dyslexia and other symbolic dysfunctions, not elsewhere classified in the U.S. ICD-10-CM clinical and billing record set. It sits within the Symptoms, Signs & Abnormal Findings chapter (R00–R99), the section that groups related diagnoses so providers, payers, and public-health agencies report them consistently. Clinicians and medical coders apply R48 when an encounter's findings match the Dyslexia and other symbolic dysfunctions, not elsewhere classified description, attaching it to the patient record so downstream insurance claims, payer audits, quality reporting, and epidemiological surveillance all reference the same standardized diagnosis. The ICD-10-CM is maintained by the Centers for Medicare & Medicaid Services and the CDC's National Center for Health Statistics, with an updated official code set released each U.S. fiscal year — always verify R48 against the current CMS/CDC release and your payer's documentation guidance before final use. This page summarizes documentation context for R48 and is a coding reference, not clinical, diagnostic, or billing advice.

R48 refers to Dyslexia and other symbolic dysfunctions, not elsewhere classified, covering speech articulation issues, reading disorders like dyslexia, and abnormalities in voice production such as hoarseness, nasal tone, or absence of voice.

Symptoms

  • Difficulty pronouncing words clearly – Seen in R47
  • Reading difficulties, letter reversals – Characteristic of R48 (Dyslexia)
  • Hoarse or nasal voice, loss of vocal strength – Related to R49

Diagnosis

Evaluation typically involves speech-language assessments, audiology tests, neurological exams, psychological evaluations (for dyslexia), and imaging when structural anomalies are suspected.

ICD10 Code Usage

ICD10 code R48 supports clinical documentation of communication and language disorders, essential for therapy planning, special education accommodations, and insurance purposes.

Related Codes

FAQs

Q1: What is ICD10 code R48?
A: It documents Dyslexia and other symbolic dysfunctions, not elsewhere classified, encompassing speech, reading, and voice disorders requiring evaluation and/or treatment.

Q2: How is dyslexia diagnosed?
A: Through comprehensive language, reading, and cognitive skill assessments by trained specialists.

Q3: Can voice disorders occur in children?
A: Yes, children may develop hoarseness or vocal strain due to misuse, infections, or congenital issues.

Q4: What are common causes of speech disturbances?
A: Causes include developmental delays, strokes, traumatic brain injuries, or neurological disorders.

Q5: Is early therapy important for speech problems?
A: Absolutely, early intervention improves speech clarity, communication skills, and overall academic outcomes.

Conclusion

ICD10 code R48 ensures proper recording of Dyslexia and other symbolic dysfunctions, not elsewhere classified, facilitating early diagnosis, appropriate therapy, and better outcomes for speech, reading, and voice impairments.

Source: ICD-10-CM (CMS / CDC NCHS official code set)

Last reviewed:

This page is a documentation reference for the ICD-10-CM code set and is not clinical, diagnostic, or billing advice. Always verify codes against the official ICD-10-CM source and your payer's guidelines.

Stop searching codes. Start delivering care.

Augustun captures the visit, drafts the note, and proposes ICD-10 codes with rationale — trusted by 10,000+ clinicians.