2026 ICD-10-CM Diagnosis Code M00Pyogenic arthritis

ICD-10-CM Codes›M00–M99›M00-M02›M00

ICD-10-CM M00
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M00 is a non-billable ICD-10-CM category code for pyogenic arthritis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as M00.00, M00.011, M00.012, and M00.019.

Code Identity

ICD-10-CM Code
M00
Billable Status
No — Non-Billable Category
Code Describes
Pyogenic arthritis
Chapter
M00-M02
Infectious arthropathies

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM00-M02Infectious arthropathies
CategoryM00Pyogenic arthritis
This CodeM00Pyogenic arthritis

Specific Coding for Pyogenic arthritisOverview

Non-specific codes like M00 require more characters. Use one of these billable codes instead:

  • M00.0 for Staphylococcal arthritis and polyarthritis

  • Use M00.00 for Staphylococcal arthritis, unspecified joint

  • M00.01 for Staphylococcal arthritis, shoulder

  • M00.02 for Staphylococcal arthritis, elbow

  • M00.03 for Staphylococcal arthritis, wrist

  • M00.04 for Staphylococcal arthritis, hand

  • M00.05 for Staphylococcal arthritis, hip

  • M00.06 for Staphylococcal arthritis, knee

  • M00.07 for Staphylococcal arthritis, ankle and foot

  • Use M00.08 for Staphylococcal arthritis, vertebrae

  • Use M00.09 for Staphylococcal polyarthritis

  • M00.1 for Pneumococcal arthritis and polyarthritis

  • Use M00.10 for Pneumococcal arthritis, unspecified joint

  • M00.11 for Pneumococcal arthritis, shoulder

  • M00.12 for Pneumococcal arthritis, elbow

  • M00.13 for Pneumococcal arthritis, wrist

  • M00.14 for Pneumococcal arthritis, hand

  • M00.15 for Pneumococcal arthritis, hip

  • M00.16 for Pneumococcal arthritis, knee

  • M00.17 for Pneumococcal arthritis, ankle and foot

  • Use M00.18 for Pneumococcal arthritis, vertebrae

  • Use M00.19 for Pneumococcal polyarthritis

  • M00.2 for Other streptococcal arthritis and polyarthritis

  • Use M00.20 for Other streptococcal arthritis, unspecified joint

  • M00.21 for Other streptococcal arthritis, shoulder

  • M00.22 for Other streptococcal arthritis, elbow

  • M00.23 for Other streptococcal arthritis, wrist

  • M00.24 for Other streptococcal arthritis, hand

  • M00.25 for Other streptococcal arthritis, hip

  • M00.26 for Other streptococcal arthritis, knee

  • M00.27 for Other streptococcal arthritis, ankle and foot

  • Use M00.28 for Other streptococcal arthritis, vertebrae

  • Use M00.29 for Other streptococcal polyarthritis

  • M00.8 for Arthritis and polyarthritis due to other bacteria

  • Use M00.80 for Arthritis due to other bacteria, unspecified joint

  • M00.81 for Arthritis due to other bacteria, shoulder

  • M00.82 for Arthritis due to other bacteria, elbow

  • M00.83 for Arthritis due to other bacteria, wrist

  • M00.84 for Arthritis due to other bacteria, hand

  • M00.85 for Arthritis due to other bacteria, hip

  • M00.86 for Arthritis due to other bacteria, knee

  • M00.87 for Arthritis due to other bacteria, ankle and foot

  • Use M00.88 for Arthritis due to other bacteria, vertebrae

  • Use M00.89 for Polyarthritis due to other bacteria

  • Use M00.9 for Pyogenic arthritis, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 2 Excludes

  • infection and inflammatory reaction due to internal joint prosthesis T84.5

Patient EducationClinical

Infectious Arthritis

Most kinds of arthritis cause pain and swelling in your joints. Joints are places where two bones meet, such as your elbow or knee. Infectious arthritis is an infection in the joint. The infection comes from a bacterial, viral, or fungal infection that spreads from another part of the body. Symptoms of infectious arthritis include:

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 M00Overview

Is M00 (Pyogenic arthritis) a billable code?

No. This is a category header that groups the codes for pyogenic arthritis, and headers cannot be submitted on claims. Claims for pyogenic arthritis need a more specific code from this category, such as M00.00, M00.011, and M00.012.