M66.26 Spontaneous rupture of extensor tendons, lower leg

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 M66.26

• 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

Code annotations containing back-references to M66.26

Back-references to M66

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

Diagnosis Index entries for M66.26

• Rupture, ruptured › tendon (traumatic) › nontraumatic (spontaneous) › extensor › lower leg

Nearby codes

• M66.249 Spontaneous rupture of extensor tendons, unspecified hand
• M66.25 Spontaneous rupture of extensor tendons, thigh
• M66.251 Spontaneous rupture of extensor tendons, right thigh
• M66.252 Spontaneous rupture of extensor tendons, left thigh
• M66.259 Spontaneous rupture of extensor tendons, unspecified thigh
• M66.26 Spontaneous rupture of extensor tendons, lower leg (this code)
• 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
• M66.271 Spontaneous rupture of extensor tendons, right ankle and foot