Q79.6 vs Q87.A
Q79.6 and Q87.A 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 Q87.A
Ehlers-Danlos syndrome (Q79.6)
Q79.6
Ehlers-Danlos syndromes
Not billable
- Chapter 17
- Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Section
- Q65-Q79
Indexed under
- Syndrome › Meekeren-Ehlers-Danlos
Q87.A
Loeys-Dietz syndrome
Billable
- Chapter 17
- Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Section
- Q80-Q89
Indexed under
- Syndrome › Loeys-Dietz
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