Back to ICD-10 library
ICD-10-CM · FY 2026 APRIL UPDATE

M22

Disorder of patella

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
M22.0Recurrent dislocation of patellaCategory
M22.00Recurrent dislocation of patella, unspecified kneeBillable
M22.01Recurrent dislocation of patella, right kneeBillable
M22.02Recurrent dislocation of patella, left kneeBillable
M22.1Recurrent subluxation of patellaCategory
M22.10Recurrent subluxation of patella, unspecified kneeBillable
M22.11Recurrent subluxation of patella, right kneeBillable
M22.12Recurrent subluxation of patella, left kneeBillable
M22.2Patellofemoral disordersCategory
M22.2XPatellofemoral disordersCategory
M22.2X1Patellofemoral disorders, right kneeBillable
M22.2X2Patellofemoral disorders, left kneeBillable
M22.2X9Patellofemoral disorders, unspecified kneeBillable
M22.3Other derangements of patellaCategory
M22.3XOther derangements of patellaCategory
M22.3X1Other derangements of patella, right kneeBillable
M22.3X2Other derangements of patella, left kneeBillable
M22.3X9Other derangements of patella, unspecified kneeBillable
M22.4Chondromalacia patellaeCategory
M22.40Chondromalacia patellae, unspecified kneeBillable
M22.41Chondromalacia patellae, right kneeBillable
M22.42Chondromalacia patellae, left kneeBillable
M22.8Other disorders of patellaCategory
M22.8XOther disorders of patellaCategory
M22.8X1Other disorders of patella, right kneeBillable
M22.8X2Other disorders of patella, left kneeBillable
M22.8X9Other disorders of patella, unspecified kneeBillable
M22.9Unspecified disorder of patellaCategory
M22.90Unspecified disorder of patella, unspecified kneeBillable
M22.91Unspecified disorder of patella, right kneeBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.