M66Spontaneous rupture of synovium and tendon
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 M66 directly
Use the most specific code supported by the record.
- Chapter XIII
- musculoskeletal system and connective tissue
- Group M60-M79
- Rối loạn mô mềm
- Official Vietnamese name
- Rách (đứt) tự phát của màng hoạt dịch và/hoặc gân
- Additional WHO coding guidance
- [See site code at the beginning of this chapter] Incl.: rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength Excl.: rotator cuff syndrome (M75.1) rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region
Related M66 codes
M66.0
Primary diagnosis candidate
Rupture of popliteal cyst
M66.1
Rupture of synovium
M66.10
Primary diagnosis candidate
Rupture of synovium, multiple sites
M66.11
Primary diagnosis candidate
Rupture of synovium, shoulder region
M66.12
Primary diagnosis candidate
Rupture of synovium, upper arm
M66.13
Primary diagnosis candidate
Rupture of synovium, forearm
M66.14
Primary diagnosis candidate
Rupture of synovium, hand
M66.15
Primary diagnosis candidate
Rupture of synovium, pelvic region and thigh
M66.16
Primary diagnosis candidate
Rupture of synovium, lower leg
M66.17
Primary diagnosis candidate
Rupture of synovium, ankle and foot
M66.18
Primary diagnosis candidate
Rupture of synovium, other
M66.19
Primary diagnosis candidate
Rupture of synovium, site 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.
