2027 ICD-10-CM Diagnosis Code M22.11Recurrent subluxation of patella, right knee

ICD-10-CM Codes›M00–M99›M20-M25›M22

ICD-10-CM M22.11
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

M22.11 is a billable ICD-10-CM diagnosis code for recurrent subluxation of patella, right knee. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 562 through 563. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified joint disorders.

Code Identity

ICD-10-CM Code
M22.11
Billable Status
Yes — Valid for Submission
Code Describes
Recurrent subluxation of patella, right knee
Short Description
Recurrent subluxation of patella, right knee
Same as the full description in the CMS dataset.
Parent Code
M22.1
Recurrent subluxation of patella

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM20-M25Other joint disorders
CategoryM22Disorder of patella
This CodeM22.11Recurrent subluxation of patella, right knee

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M22.11: its own notes plus those printed at M22, 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.

From M22 Disorder of patella applies to 21 codes
  • 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.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name M22.11, its category, or a range that includes it.

Excludes2 3

These codes carry an Excludes2 note naming M22.11: its condition is not part of those codes, and both may be reported when the patient has both.

  • M23 Internal derangement of knee
    recurrent dislocation or subluxation of patella (M22.0-M22.1) names M22.0-M22.1, which includes this code
  • M24.4 Recurrent dislocation of joint
    recurrent dislocation of patella (M22.0-M22.1) names M22.0-M22.1, which includes this code
  • S83 Dislocation and sprain of joints and ligaments of knee
    derangement of patella (M22.0-M22.3) names M22.0-M22.3, which includes this code

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS007
Other specified joint disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Dislocations

Dislocations are joint injuries that force the ends of your bones out of position. The cause is often a fall or a blow, sometimes from playing a contact sport. You can dislocate your ankles, knees, shoulders, hips, elbows and jaw. You can also dislocate your finger and toe joints.

Read the full article at MedlinePlus

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

Convert M22.11 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
718.36 Recur dislocat-l/leg
Approximate The match is approximate rather than exact.

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 M22.11Overview

What is the ICD-10 code for recurrent subluxation of patella, right knee?

The ICD-10-CM code for recurrent subluxation of patella, right knee is M22.11 (sometimes written as M2211). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is M22.11 (Recurrent subluxation of patella) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report recurrent subluxation of patella, right knee on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does M22.11 group to?

When recurrent subluxation of patella, right knee is the principal diagnosis on an inpatient stay, it groups to MS-DRG 563, 562, with relative weights from 0.8982 to 1.3981 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M22.11?

Under the General Equivalence Mappings, recurrent subluxation of patella, right knee converts to ICD-9-CM 718.36 (recur dislocat-l/leg). The mapping is approximate, so confirm the match fits the documentation.