F70 vs F80.0
F70 (Mild intellectual disabilities) compared with F80.0 (Phonological 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 F70: “speech articulation impairment due to intellectual disabilities (F70-F79)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| F70Mild intellectual disabilities | F80.0Phonological 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 | Mild intellectual disabilities is a billable ICD-10-CM diagnosis code (F70). | Phonological disorder is a billable ICD-10-CM diagnosis code (F80.0). |
| Includes | IQ level 50-55 to approximately 70 Mild mental subnormality | Dyslalia Functional speech articulation disorder Lalling Lisping |
| Code first | any associated physical or developmental disorders | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources