2026 ICD-10-CM Diagnosis Code M11Other crystal arthropathies

ICD-10-CM Codes›M00–M99›M05-M14›M11

ICD-10-CM M11
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M11 is a non-billable ICD-10-CM category code for other crystal arthropathies, so it cannot be submitted on claims. Use a more specific code from this category instead, such as M11.00, M11.011, M11.012, and M11.019.

Code Identity

ICD-10-CM Code
M11
Billable Status
No — Non-Billable Category
Code Describes
Other crystal arthropathies
Short Description
Other crystal arthropathies
Same as the full description in the CMS dataset.
Chapter
M05-M14
Inflammatory polyarthropathies

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM05-M14Inflammatory polyarthropathies
CategoryM11Other crystal arthropathies
This CodeM11Other crystal arthropathies

Specific Coding for Other crystal arthropathiesOverview

Non-specific codes like M11 require more characters. Use one of these billable codes instead:

  • M11.0 for Hydroxyapatite deposition disease

  • Use M11.00 for Hydroxyapatite deposition disease, unspecified site

  • M11.01 for Hydroxyapatite deposition disease, shoulder

  • M11.02 for Hydroxyapatite deposition disease, elbow

  • M11.03 for Hydroxyapatite deposition disease, wrist

  • M11.04 for Hydroxyapatite deposition disease, hand

  • M11.05 for Hydroxyapatite deposition disease, hip

  • M11.06 for Hydroxyapatite deposition disease, knee

  • M11.07 for Hydroxyapatite deposition disease, ankle and foot

  • Use M11.08 for Hydroxyapatite deposition disease, vertebrae

  • Use M11.09 for Hydroxyapatite deposition disease, multiple sites

  • M11.1 for Familial chondrocalcinosis

  • Use M11.10 for Familial chondrocalcinosis, unspecified site

  • M11.11 for Familial chondrocalcinosis, shoulder

  • M11.12 for Familial chondrocalcinosis, elbow

  • M11.13 for Familial chondrocalcinosis, wrist

  • M11.14 for Familial chondrocalcinosis, hand

  • M11.15 for Familial chondrocalcinosis, hip

  • M11.16 for Familial chondrocalcinosis, knee

  • M11.17 for Familial chondrocalcinosis, ankle and foot

  • Use M11.18 for Familial chondrocalcinosis, vertebrae

  • Use M11.19 for Familial chondrocalcinosis, multiple sites

  • M11.2 for Other chondrocalcinosis

  • Use M11.20 for Other chondrocalcinosis, unspecified site

  • M11.21 for Other chondrocalcinosis, shoulder

  • M11.22 for Other chondrocalcinosis, elbow

  • M11.23 for Other chondrocalcinosis, wrist

  • M11.24 for Other chondrocalcinosis, hand

  • M11.25 for Other chondrocalcinosis, hip

  • M11.26 for Other chondrocalcinosis, knee

  • M11.27 for Other chondrocalcinosis, ankle and foot

  • Use M11.28 for Other chondrocalcinosis, vertebrae

  • Use M11.29 for Other chondrocalcinosis, multiple sites

  • M11.8 for Other specified crystal arthropathies

  • Use M11.80 for Other specified crystal arthropathies, unspecified site

  • M11.81 for Other specified crystal arthropathies, shoulder

  • M11.82 for Other specified crystal arthropathies, elbow

  • M11.83 for Other specified crystal arthropathies, wrist

  • M11.84 for Other specified crystal arthropathies, hand

  • M11.85 for Other specified crystal arthropathies, hip

  • M11.86 for Other specified crystal arthropathies, knee

  • M11.87 for Other specified crystal arthropathies, ankle and foot

  • Use M11.88 for Other specified crystal arthropathies, vertebrae

  • Use M11.89 for Other specified crystal arthropathies, multiple sites

  • Use M11.9 for Crystal arthropathy, unspecified

Clinical InformationClinical

  • Crystal Arthropathies

    joint disorders that are characterized by accumulation of microcrystals in and around the joint including in the synovial fluid. they are classified according to the chemical nature of the crystals such as calcium pyrophosphate; basic calcium phosphates; and monosodium urate (see uric acid).

Patient EducationClinical

Arthritis

If you feel pain and stiffness in your body or have trouble moving around, you might have arthritis. Any disorder that affects the joints is often called arthritis. Joints are places where two bones meet, such as your elbow or knee.

The full article covers:

  • What is arthritis?
  • What are the types of arthritis?
  • What are the symptoms of arthritis?
  • Who is more likely to get arthritis?
  • How is arthritis diagnosed?
  • What are the treatments for arthritis?

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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M11Overview

Is M11 (Other crystal arthropathies) a billable code?

No. This is a category header that groups the codes for other crystal arthropathies, and headers cannot be submitted on claims. Claims for other crystal arthropathies need a more specific code from this category, such as M11.00, M11.011, and M11.012.