M66.17 Rupture of synovium, ankle, foot and toes

Non-billable header with 9 child codes.

Applies from M66 Spontaneous rupture of synovium and tendon

Includes

• rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength

Excludes2 (not included here)

• rotator cuff syndrome (M75.1-)
• rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region

Applies from M66.1 Rupture of synovium

Applicable to

• Rupture of synovial cyst

Excludes2 (not included here)

• rupture of popliteal cyst (M66.0)

Codes under M66.17

• M66.171 Rupture of synovium, right ankle
• M66.172 Rupture of synovium, left ankle
• M66.173 Rupture of synovium, unspecified ankle
• M66.174 Rupture of synovium, right foot
• M66.175 Rupture of synovium, left foot
• M66.176 Rupture of synovium, unspecified foot
• M66.177 Rupture of synovium, right toe(s)
• M66.178 Rupture of synovium, left toe(s)
• M66.179 Rupture of synovium, unspecified toe(s)

Code annotations containing back-references to M66.17

Back-references to M66.1

• Type 1 Excludes: M71.3 Other bursal cyst ("synovial cyst with rupture (M66.1-)")

Back-references to M66

• Type 2 Excludes: M62.1 Other rupture of muscle (nontraumatic) ("rupture of tendon (M66.-)")

Diagnosis Index entries for M66.17

• Rupture, ruptured › synovium (cyst) › ankle
• Rupture, ruptured › synovium (cyst) › foot
• Rupture, ruptured › synovium (cyst) › toe

Nearby codes

• M66.146 Rupture of synovium, unspecified finger(s)
• M66.15 Rupture of synovium, hip
• M66.151 Rupture of synovium, right hip
• M66.152 Rupture of synovium, left hip
• M66.159 Rupture of synovium, unspecified hip
• M66.17 Rupture of synovium, ankle, foot and toes (this code)
• M66.171 Rupture of synovium, right ankle
• M66.172 Rupture of synovium, left ankle
• M66.173 Rupture of synovium, unspecified ankle
• M66.174 Rupture of synovium, right foot
• M66.175 Rupture of synovium, left foot