M23.8 Other internal derangements of knee

Non-billable header with 1 child codes.

Applicable to

• Laxity of ligament of knee
• Snapping knee

Applies from M23 Internal derangement of knee

Excludes1 (never code together)

• ankylosis (M24.66)
• deformity of knee (M21.-)
• osteochondritis dissecans (M93.2)

Excludes2 (not included here)

• current injury - see injury of knee and lower leg (S80-S89)
• recurrent dislocation or subluxation of joints (M24.4)
• recurrent dislocation or subluxation of patella (M22.0-M22.1)

Codes under M23.8

• M23.8X Other internal derangements of knee

Code annotations containing back-references to M23.8

Back-references to M23.8

• Type 2 Excludes: M24 Other specific joint derangements ("snapping knee (M23.8-)")

Back-references to M23

• Type 2 Excludes: M24.1 Other articular cartilage disorders ("internal derangement of knee (M23.-)")
• Type 2 Excludes: S83 Dislocation and sprain of joints and ligaments of knee ("internal derangement of knee (M23.-)")

Nearby codes

• M23.649 Other spontaneous disruption of lateral collateral ligament of unspecified knee
• M23.67 Other spontaneous disruption of capsular ligament of knee
• M23.671 Other spontaneous disruption of capsular ligament of right knee
• M23.672 Other spontaneous disruption of capsular ligament of left knee
• M23.679 Other spontaneous disruption of capsular ligament of unspecified knee
• M23.8 Other internal derangements of knee (this code)
• M23.8X Other internal derangements of knee
• M23.8X1 Other internal derangements of right knee
• M23.8X2 Other internal derangements of left knee
• M23.8X9 Other internal derangements of unspecified knee
• M23.9 Unspecified internal derangement of knee