M66.27 Spontaneous rupture of extensor tendons, ankle and foot

Non-billable header with 3 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

Codes under M66.27

• M66.271 Spontaneous rupture of extensor tendons, right ankle and foot
• M66.272 Spontaneous rupture of extensor tendons, left ankle and foot
• M66.279 Spontaneous rupture of extensor tendons, unspecified ankle and foot

Code annotations containing back-references to M66.27

Back-references to M66

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

Diagnosis Index entries for M66.27

• Rupture, ruptured › tendon (traumatic) › nontraumatic (spontaneous) › extensor › ankle
• Rupture, ruptured › tendon (traumatic) › nontraumatic (spontaneous) › extensor › foot

Nearby codes

• M66.259 Spontaneous rupture of extensor tendons, unspecified thigh
• M66.26 Spontaneous rupture of extensor tendons, lower leg
• M66.261 Spontaneous rupture of extensor tendons, right lower leg
• M66.262 Spontaneous rupture of extensor tendons, left lower leg
• M66.269 Spontaneous rupture of extensor tendons, unspecified lower leg
• M66.27 Spontaneous rupture of extensor tendons, ankle and foot (this code)
• M66.271 Spontaneous rupture of extensor tendons, right ankle and foot
• M66.272 Spontaneous rupture of extensor tendons, left ankle and foot
• M66.279 Spontaneous rupture of extensor tendons, unspecified ankle and foot
• M66.28 Spontaneous rupture of extensor tendons, other site
• M66.29 Spontaneous rupture of extensor tendons, multiple sites