Excludes1 pair
F80.1 vs F80.2
F80.1 and F80.2 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
The official note, declared on F80.1
mixed receptive-expressive language disorder (F80.2)
F80.1
Expressive language disorder
Billable
- Chapter 5
- Mental, Behavioral and Neurodevelopmental disorders
- Section
- F80-F89
Use when the record says
- Developmental dysphasia or aphasia, expressive type
Indexed under
- Aphasia › developmental › expressive type
- Development › delayed › language (skills) (expressive)
- Disorder › language › expressive
- Dysphasia › developmental › expressive type
- Disorder › developmental › language › expressive
F80.2
Mixed receptive-expressive language disorder
Billable
- Chapter 5
- Mental, Behavioral and Neurodevelopmental disorders
- Section
- F80-F89
Use when the record says
- Developmental dysphasia or aphasia, receptive type
- Developmental Wernicke's aphasia
Indexed under
- Aphasia › auditory (developmental)
- Aphasia › developmental (receptive type)
- Aphasia › sensory
- Aphasia › Wernicke's (developmental)
- Disorder › receptive language
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027