M91Juvenile osteochondrosis of hip and pelvis
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use M91 directly
Use the most specific code supported by the record.
- Chapter XIII
- musculoskeletal system and connective tissue
- Group M80-M94
- chondropathies
- Official Vietnamese name
- Thoái hóa xương sụn khớp háng và/hoặc khung chậu ở thiếu niên
- Additional WHO coding guidance
- Excl.: slipped upper femoral epiphysis (nontraumatic) (M93.0)
Related M91 codes
M91.0
Primary diagnosis candidate
Juvenile osteochondrosis of pelvis
M91.1
Primary diagnosis candidate
Juvenile osteochondrosis of head of femur [Legg-Calvé- Perthes]
M91.2
Primary diagnosis candidate
Coxa plana
M91.3
Primary diagnosis candidate
Pseudocoxalgia
M91.8
Primary diagnosis candidate
Other juvenile osteochondrosis of hip and pelvis
M91.9
Primary diagnosis candidate
Juvenile osteochondrosis of hip and pelvis, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
