ICD-10-CM 2027
ICD-10 code for hypermobility syndrome
From the official ICD-10-CM alphabetic index entry “Syndrome › hypermobility”. Page updated September 29, 2026.
About coding hypermobility syndrome
The ICD-10-CM code for hypermobility syndrome is M35.7 (Hypermobility syndrome).
Within M35 (other systemic involvement of connective tissue), M35.7 is specifically for hypermobility syndrome. Related codes cover Sjogren syndrome (M35.0), other overlap syndromes (M35.1), Behcet's disease (M35.2), polymyalgia rheumatica (M35.3), diffuse (eosinophilic) fasciitis (M35.4), multifocal fibrosclerosis (M35.5), relapsing panniculitis [Weber-Christian] (M35.6), other specified systemic involvement of connective tissue (M35.8) and 1 more.
Don't report M35.7 together with the conditions in its Excludes1 note: ligamentous laxity, NOS (M24.2-).
The conditions in its Excludes2 note aren't part of M35.7, but may be coded alongside it if the patient has both: Ehlers-Danlos syndromes (Q79.6-).
Don't confuse with (Excludes1 for M35.7)
- ligamentous laxity, NOS (M24.2-)
Common questions about hypermobility syndrome ICD-10 codes
What is the ICD-10 code for hypermobility syndrome?
- M35.7 — Hypermobility syndrome.
Is M35.7 billable?
- Yes. M35.7 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M35.7 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M35.7 as a principal diagnosis.
Is M35.7 a CC or MCC?
- No. M35.7 is neither a CC nor an MCC under MS-DRG v44.0.