ICD-10-CM 2027 diagnosis code
M00.1Pneumococcal arthritis and polyarthritis
M00.1 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About M00.1
M00.1 is the ICD-10-CM diagnosis code for Pneumococcal arthritis and polyarthritis. It belongs to category M00 (pyogenic arthritis), block M00-M02 (infectious arthropathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.
Within M00 (pyogenic arthritis), M00.1 is specifically for Pneumococcal arthritis and polyarthritis. Related codes cover staphylococcal arthritis and polyarthritis (M00.0), other streptococcal arthritis and polyarthritis (M00.2), arthritis and polyarthritis due to other bacteria (M00.8) and unspecified (M00.9).
To report this condition, pick the subcode that matches the documentation: M00.10 (joint), M00.11 (shoulder), M00.12 (elbow), M00.13 (wrist), M00.14 (hand), M00.15 (hip), M00.16 (knee), M00.17 (foot) and 2 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under M00.1
- M00.10Pneumococcal arthritis, unspecified jointBillable
- M00.11Pneumococcal arthritis, shoulder
- M00.12Pneumococcal arthritis, elbow
- M00.13Pneumococcal arthritis, wrist
- M00.14Pneumococcal arthritis, hand
- M00.15Pneumococcal arthritis, hip
- M00.16Pneumococcal arthritis, knee
- M00.17Pneumococcal arthritis, ankle and foot
- M00.18Pneumococcal arthritis, vertebraeBillable
- M00.19Pneumococcal polyarthritisBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to M00.1.
› From M00 Pyogenic arthritis
- infection and inflammatory reaction due to internal joint prosthesis (T84.5-)
Broader instructions also apply from M00-M02 Infectious arthropathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about M00.1
Is M00.1 billable?
- No. M00.1 is a header code. Report one of its more specific subcodes instead.