F80.0 vs F80.1
F80.0 (Phonological disorder) compared with F80.1 (Expressive language disorder), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. F80.0 carries an Excludes2 note covering F80.1: “speech articulation impairment with expressive language developmental disorder (F80.1)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| F80.0Phonological disorder | F80.1Expressive language disorder | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) |
| Definition | Phonological disorder is a billable ICD-10-CM diagnosis code (F80.0). | Expressive language disorder is a billable ICD-10-CM diagnosis code (F80.1). |
| Includes | Dyslalia Functional speech articulation disorder Lalling Lisping | Developmental dysphasia or aphasia, expressive type |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources