F80.0 Phonological disorder

Billable ICD-10-CM code, FY2026.

Applicable to

• Dyslalia
• Functional speech articulation disorder
• Lalling
• Lisping
• Phonological developmental disorder
• Speech articulation developmental disorder
• Speech-sound disorder

Excludes1 (never code together)

• speech articulation impairment due to aphasia NOS (R47.01)
• speech articulation impairment due to apraxia (R48.2)

Excludes2 (not included here)

• speech articulation impairment due to hearing loss (F80.4)
• speech articulation impairment due to intellectual disabilities (F70-F79)
• speech articulation impairment with expressive language developmental disorder (F80.1)
• speech articulation impairment with mixed receptive expressive language developmental disorder (F80.2)

MS-DRG index

Defines the logic of DRG(s) 886 in MDC 19.

Approximate ICD-9-CM (GEMs)

• 315.39 Other developmental speech or language disorder (approximate)

Code annotations containing back-references to F80.0

Back-references to F80.0

• Type 2 Excludes: F45 Somatoform disorders ("lalling (F80.0)")
• Type 2 Excludes: F45 Somatoform disorders ("lisping (F80.0)")

Back-references to F80

• Type 2 Excludes: F94.0 Selective mutism ("specific developmental disorders of speech and language (F80.-)")
• Code Also: G93.45 Developmental and epileptic encephalopathy ("developmental disorder of speech and language (F80.-)")
• Use Additional: Q87.87 Hao-Fountain Syndrome ("developmental speech disorder (F80.-)")
• Use Additional: Q87.88 CTNNB1 syndrome ("developmental disorder of speech and language (F80.-)")
• Type 1 Excludes: R47 Speech disturbances, not elsewhere classified ("specific developmental disorders of speech and language (F80.-)")
• Code Also: Z15.1 Genetic susceptibility to epilepsy and neurodevelopmental disorders ("developmental disorder of speech and language (F80.-)")
• Type 1 Excludes: Z55 Problems related to education and literacy ("disorders of psychological development (F80-F89)")

Diagnosis Index entries for F80.0

• Disorder (of) › developmental › phonological
• Disorder (of) › developmental › speech › articulation
• Disorder (of) › speech › articulation (functional) (specific)
• Disorder (of) › speech-sound
• Dyslalia (developmental)
• Idioglossia
• Lalling
• Lisping

Nearby codes

• F80 Specific developmental disorders of speech and language
• F80.0 Phonological disorder (this code)
• F80.1 Expressive language disorder
• F80.2 Mixed receptive-expressive language disorder
• F80.4 Speech and language development delay due to hearing loss
• F80.8 Other developmental disorders of speech and language
• F80.81 Childhood onset fluency disorder