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M66.349

Billable

Spontaneous rupture of flexor tendons, unspecified hand

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A spontaneous breaking or tearing of the flexor tendons in an unspecified hand without a known injury or trauma.

Coding Tips

  • •Verify which hand is affected; if documented, use M66.341 (right) or M66.342 (left) instead of the unspecified code
  • •Document any underlying conditions like rheumatoid arthritis or chronic tendon disease that may have contributed to the rupture

Code Hierarchy

└M66Spontaneous rupture of synovium and tendon└M66.3Spontaneous rupture of flexor tendons└M66.34Spontaneous rupture of flexor tendons, hand└M66.349Spontaneous rupture of flexor tendons, unspecified hand
└M66.349Spontaneous rupture of flexor tendons, unspecified hand

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