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M66.342

Billable

Spontaneous rupture of flexor tendons, left hand

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

What This Code Means

The flexor tendons in the left hand spontaneously tear or rupture without a specific injury or trauma.

Coding Tips

  • •Verify laterality is documented as left hand to distinguish from right-sided ruptures
  • •Note functional impact on finger flexion and grip strength in the left hand

Code Hierarchy

└M66Spontaneous rupture of synovium and tendon└M66.3Spontaneous rupture of flexor tendons└M66.34Spontaneous rupture of flexor tendons, hand└M66.342Spontaneous rupture of flexor tendons, left hand
└M66.342Spontaneous rupture of flexor tendons, left hand

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