M22.4
⚠ Non-billable
Chondromalacia patellae
ICD-10-CM · FY2026 · Diseases of the Musculoskeletal System and Connective Tissue
Code
M22.4
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Musculoskeletal System and Connective Tissue
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code M22.4?
ICD-10-CM code M22.4 represents Chondromalacia patellae. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Musculoskeletal System and Connective Tissue chapter, effective October 1, 2025 – September 30, 2026.
Is M22.4 billable?
No. M22.4 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is M22.4 in?
M22.4 belongs to the Diseases of the Musculoskeletal System and Connective Tissue chapter (M00–M99) of ICD-10-CM.
Related codes in the M22 category
M22
Disorder of patella
Non-billable
M22.0
Recurrent dislocation of patella
Non-billable
M22.1
Recurrent subluxation of patella
Non-billable
M22.2
Patellofemoral disorders
Non-billable
M22.3
Other derangements of patella
Non-billable
M22.8
Other disorders of patella
Non-billable
M22.9
Unspecified disorder of patella
Non-billable
M22.00
Recurrent dislocation of patella, unspecified knee
Billable
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