M22.4 Chondromalacia patellae

Non-billable header with 3 child codes.

Applies from M22 Disorder of patella

Excludes2 (not included here)

• traumatic dislocation of patella (S83.0-)

Codes under M22.4

• M22.40 Chondromalacia patellae, unspecified knee
• M22.41 Chondromalacia patellae, right knee
• M22.42 Chondromalacia patellae, left knee

Code annotations containing back-references to M22.4

Back-references to M22.4

• Type 1 Excludes: M94.2 Chondromalacia ("chondromalacia patellae (M22.4)")

Diagnosis Index entries for M22.4

• Chondromalacia (systemic) › knee › patella
• Chondromalacia (systemic) › patella
• Softening › cartilage › patella

Nearby codes

• M22.3 Other derangements of patella
• M22.3X Other derangements of patella
• M22.3X1 Other derangements of patella, right knee
• M22.3X2 Other derangements of patella, left knee
• M22.3X9 Other derangements of patella, unspecified knee
• M22.4 Chondromalacia patellae (this code)
• M22.40 Chondromalacia patellae, unspecified knee
• M22.41 Chondromalacia patellae, right knee
• M22.42 Chondromalacia patellae, left knee
• M22.8 Other disorders of patella
• M22.8X Other disorders of patella