M66.23 Spontaneous rupture of extensor tendons, forearm

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 M66.23

• M66.231 Spontaneous rupture of extensor tendons, right forearm
• M66.232 Spontaneous rupture of extensor tendons, left forearm
• M66.239 Spontaneous rupture of extensor tendons, unspecified forearm

Code annotations containing back-references to M66.23

Back-references to M66

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

Diagnosis Index entries for M66.23

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

Nearby codes

• M66.219 Spontaneous rupture of extensor tendons, unspecified shoulder
• M66.22 Spontaneous rupture of extensor tendons, upper arm
• M66.221 Spontaneous rupture of extensor tendons, right upper arm
• M66.222 Spontaneous rupture of extensor tendons, left upper arm
• M66.229 Spontaneous rupture of extensor tendons, unspecified upper arm
• M66.23 Spontaneous rupture of extensor tendons, forearm (this code)
• M66.231 Spontaneous rupture of extensor tendons, right forearm
• M66.232 Spontaneous rupture of extensor tendons, left forearm
• M66.239 Spontaneous rupture of extensor tendons, unspecified forearm
• M66.24 Spontaneous rupture of extensor tendons, hand
• M66.241 Spontaneous rupture of extensor tendons, right hand