M66.33 Spontaneous rupture of flexor 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 M66.33

• M66.331 Spontaneous rupture of flexor tendons, right forearm
• M66.332 Spontaneous rupture of flexor tendons, left forearm
• M66.339 Spontaneous rupture of flexor tendons, unspecified forearm

Code annotations containing back-references to M66.33

Back-references to M66

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

Diagnosis Index entries for M66.33

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

Nearby codes

• M66.319 Spontaneous rupture of flexor tendons, unspecified shoulder
• M66.32 Spontaneous rupture of flexor tendons, upper arm
• M66.321 Spontaneous rupture of flexor tendons, right upper arm
• M66.322 Spontaneous rupture of flexor tendons, left upper arm
• M66.329 Spontaneous rupture of flexor tendons, unspecified upper arm
• M66.33 Spontaneous rupture of flexor tendons, forearm (this code)
• M66.331 Spontaneous rupture of flexor tendons, right forearm
• M66.332 Spontaneous rupture of flexor tendons, left forearm
• M66.339 Spontaneous rupture of flexor tendons, unspecified forearm
• M66.34 Spontaneous rupture of flexor tendons, hand
• M66.341 Spontaneous rupture of flexor tendons, right hand