ICD-10-CM 2027
ICD-10 code for language developmental disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › language (developmental)”. Page updated September 29, 2026.
About coding language developmental disorder
The ICD-10-CM code for language developmental disorder is F80.9 (Developmental disorder of speech and language, unspecified). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on F80.9.
Within F80, choose F80.9 (Developmental disorder of speech and language, unspecified) only when documentation doesn't support a more specific option: Phonological disorder (F80.0), Expressive language disorder (F80.1), mixed receptive-expressive language disorder (F80.2), speech and language development delay due to hearing loss (F80.4) and other developmental disorders of speech and language (F80.8).
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 language developmental disorder codes (official index)
Common questions about language developmental disorder ICD-10 codes
What is the ICD-10 code for language developmental disorder?
- F80.9 — Developmental disorder of speech and language, unspecified. More specific codes apply when the documentation supports them: F80.1, F80.2, F80.2.
What is the ICD-10 code for expressive language developmental disorder?
- F80.1 — Expressive language disorder.
What is the ICD-10 code for mixed receptive and expressive language developmental disorder?
- F80.2 — Mixed receptive-expressive language disorder.
What is the ICD-10 code for receptive language developmental disorder?
- F80.2 — Mixed receptive-expressive language disorder.
Is F80.9 billable?
- Yes. F80.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F80.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F80.9 as a principal diagnosis.
Is F80.9 a CC or MCC?
- No. F80.9 is neither a CC nor an MCC under MS-DRG v44.0.