H90 vs H91.3
H90 and H91.3 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on H90
deaf nonspeaking NEC (H91.3)
H90
Conductive and sensorineural hearing loss
Not billable
- Chapter 8
- Diseases of the ear and mastoid process
- Section
- H90-H94
H91.3
Deaf nonspeaking, not elsewhere classified
BillableUnspecified
- Chapter 8
- Diseases of the ear and mastoid process
- Section
- H90-H94
Indexed under
- Deaf nonspeaking NEC
- DeafmutismNEC (acquired) (congenital)
- Deafness › nonspeaking (acquired) (complete) (hereditary) (partial)
- Mutism › deafNEC
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