2027 ICD-10-CM Diagnosis Code M22Disorder of patella

ICD-10-CM Codes›M00–M99›M20-M25›M22

ICD-10-CM M22
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

M22 is a non-billable ICD-10-CM category code for disorder of patella, so it cannot be submitted on claims. Use a more specific code from this category instead, such as M22.00, M22.01, M22.02, and M22.10.

Code Identity

ICD-10-CM Code
M22
Billable Status
No — Non-Billable Category
Code Describes
Disorder of patella
Short Description
Disorder of patella
Same as the full description in the CMS dataset.
Chapter
M20-M25
Other joint disorders

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM20-M25Other joint disorders
CategoryM22Disorder of patella
This CodeM22Disorder of patella

Specific Coding for Disorder of patellaOverview

Non-specific codes like M22 require more characters. Use one of these billable codes instead:

  • M22.0 for Recurrent dislocation of patella

  • Use M22.00 for Recurrent dislocation of patella, unspecified knee

  • Use M22.01 for Recurrent dislocation of patella, right knee

  • Use M22.02 for Recurrent dislocation of patella, left knee

  • M22.1 for Recurrent subluxation of patella

  • Use M22.10 for Recurrent subluxation of patella, unspecified knee

  • Use M22.11 for Recurrent subluxation of patella, right knee

  • Use M22.12 for Recurrent subluxation of patella, left knee

  • M22.2 for Patellofemoral disorders

  • M22.2X for Patellofemoral disorders

  • M22.3 for Other derangements of patella

  • M22.3X for Other derangements of patella

  • M22.4 for Chondromalacia patellae

  • Use M22.40 for Chondromalacia patellae, unspecified knee

  • Use M22.41 for Chondromalacia patellae, right knee

  • Use M22.42 for Chondromalacia patellae, left knee

  • M22.8 for Other disorders of patella

  • M22.8X for Other disorders of patella

  • M22.9 for Unspecified disorder of patella

  • Use M22.90 for Unspecified disorder of patella, unspecified knee

  • Use M22.91 for Unspecified disorder of patella, right knee

  • Use M22.92 for Unspecified disorder of patella, left knee

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M22: its own notes plus those printed at block M00-M25, block M20-M25, and Chapter 13. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block M00-M25 applies to 2,249 codes
  • Disorders affecting predominantly peripheral (limb) joints

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On M22 itself
  • traumatic dislocation of patella (S83.0-)
From Block M20-M25 Other joint disorders applies to 719 codes
From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Notes

General instructions on how these codes are used.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Patient EducationClinical

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 the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About M22Overview

What is the ICD-10 code for disorder of patella?

M22 is the ICD-10-CM category for disorder of patella, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is M22 (Disorder of patella) a billable code?

No. This is a category header that groups the codes for disorder of patella, and headers cannot be submitted on claims. Claims for disorder of patella need a more specific code from this category, such as M22.00, M22.01, and M22.02.