Q77.5 Diastrophic dysplasia

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applies from Q77 Osteochondrodysplasia with defects of growth of tubular bones and spine

Excludes1 (never code together)

• mucopolysaccharidosis (E76.0-E76.3)

Excludes2 (not included here)

• congenital myotonic chondrodystrophy (G71.13)

MS-DRG index

Defines the logic of DRG(s) 564-566 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 756.4 Chondrodystrophy (approximate)

Code annotations containing back-references to Q77.5

Back-references to Q77

• Type 1 Excludes: M24.3 Pathological dislocation of joint, not elsewhere classified ("congenital dislocation or displacement of joint- see congenital malformations and deformations of the musculoskeletal system (Q65-Q79)")
• Type 2 Excludes: M95 Other acquired deformities of musculoskeletal system and connective tissue ("congenital malformations and deformations of the musculoskeletal system (Q65-Q79)")

Diagnosis Index entries for Q77.5

• Dysplasia › dystrophic

Nearby codes

• Q77.0 Achondrogenesis
• Q77.1 Thanatophoric short stature
• Q77.2 Short rib syndrome
• Q77.3 Chondrodysplasia punctata
• Q77.4 Achondroplasia
• Q77.5 Diastrophic dysplasia (this code)
• Q77.6 Chondroectodermal dysplasia
• Q77.7 Spondyloepiphyseal dysplasia
• Q77.8 Other osteochondrodysplasia with defects of growth of tubular bones and spine
• Q77.9 Osteochondrodysplasia with defects of growth of tubular bones and spine, unspecified