Q78.3 Progressive diaphyseal dysplasia

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

Applicable to

• Camurati-Engelmann syndrome

Applies from Q78 Other osteochondrodysplasias

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)

• 756.56 Multiple epiphyseal dysplasia (approximate)

Code annotations containing back-references to Q78.3

Back-references to Q78

• 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 Q78.3

• Camurati-Engelmann syndrome
• Dysplasia › diaphyseal, progressive
• Dysplasia › fibrous › diaphyseal, progressive
• Engelmann (-Camurati) syndrome

Nearby codes

• Q78 Other osteochondrodysplasias
• Q78.0 Osteogenesis imperfecta
• Q78.1 Polyostotic fibrous dysplasia
• Q78.2 Osteopetrosis
• Q78.3 Progressive diaphyseal dysplasia (this code)
• Q78.4 Enchondromatosis
• Q78.5 Metaphyseal dysplasia
• Q78.6 Multiple congenital exostoses
• Q78.8 Other specified osteochondrodysplasias
• Q78.9 Osteochondrodysplasia, unspecified