Excludes1 pair
Q79- vs Q82.8
Q79 and Q82.8 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 Q82.8
Ehlers-Danlos syndromes (Q79.6-)
Q79
Congenital malformations of musculoskeletal system, not elsewhere classified
Not billable
- Chapter 17
- Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Section
- Q65-Q79
Q82.8
Other specified congenital malformations of skin
BillableUnspecified
- Chapter 17
- Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Section
- Q80-Q89
Use when the record says
- Abnormal palmar creases
- Accessory skin tags
- Benign familial pemphigus [Hailey-Hailey]
- Congenital poikiloderma
- Cutis laxa (hyperelastica)
- Dermatoglyphic anomalies
- Inherited keratosis palmaris et plantaris
- Keratosis follicularis [Darier-White]
Indexed under
- Angiomatosis
- Bloom syndrome (-Machacek)(-Torre)
- Brugsch's syndrome
- Darier (-White) disease (congenital)
- Dermatolysis (exfoliativa) (congenital)
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