All ICD10 Codes
M22Not billable, use a more specific code below

Disorder of patella

In Other joint disorders (M20-M25), chapter 13: Diseases of the Musculoskeletal System and Connective Tissue

21 billable codes under M22: none are a CC or MCC; none map to an HCC.

Advertisements

Instructional notes

Excludes2: not included here, code separately if applicable

  • traumatic dislocation of patella (S83.0-)

Also applies, from Other joint disorders (M20-M25)

These notes sit on M20-M25 and apply to every code under it, including M22.

Excludes2: not included here, code separately if applicable

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers site and laterality, acute injury versus chronic musculoskeletal conditions, 7th characters for pathologic fractures, osteoporosis with or without current fracture, and multisystem inflammatory syndrome.

Read Section I.C.13 (page 60)

All codes under M22

M22 can't be used on a claim. Pick a billable code below; grey headings group them.

M22 MS-DRGs

As the principal diagnosis, all 21 billable codes under M22 group to MS-DRG 562 or 563 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Knee Injuries and Disorders

Your knee joint is made up of bone, cartilage, ligaments and fluid. Muscles and tendons help the knee joint move. When any of these structures is hurt or diseased, you have knee problems. Knee problems can cause pain and difficulty walking.

Read more about knee injuries and disorders on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.