M00.1 – Pneumococcal arthritis and polyarthritis

ICD-10-CM 2027 diagnosis code · Infectious arthropathies

Non-billable header

ICD-10-CM code M00.1

Code: M00.1 (claims format: M001)
Description: Pneumococcal arthritis and polyarthritis
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M00-M02 Infectious arthropathies
Parent codes: M00

Billable codes under M00.1

M00.1 is a header code and cannot be used on claims. Choose the most specific code:

M00.10 – Pneumococcal arthritis, unspecified jointBillable
M00.11 – Pneumococcal arthritis, shoulderHeader (more codes below)
M00.12 – Pneumococcal arthritis, elbowHeader (more codes below)
M00.13 – Pneumococcal arthritis, wristHeader (more codes below)
M00.14 – Pneumococcal arthritis, handHeader (more codes below)
M00.15 – Pneumococcal arthritis, hipHeader (more codes below)
M00.16 – Pneumococcal arthritis, kneeHeader (more codes below)
M00.17 – Pneumococcal arthritis, ankle and footHeader (more codes below)
M00.18 – Pneumococcal arthritis, vertebraeBillable
M00.19 – Pneumococcal polyarthritisBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M00 – Pyogenic arthritis

Excludes2 (not included here):

infection and inflammatory reaction due to internal joint prosthesis (T84.5-)

Block M00-M02

Notes:

This block comprises arthropathies due to microbiological agents. Distinction is made between the following types of etiological relationship:
a) direct infection of joint, where organisms invade synovial tissue and microbial antigen is present in the joint;
b) indirect infection, which may be of two types: a reactive arthropathy, where microbial infection of the body is established but neither organisms nor antigens can be identified in the joint, and a postinfective arthropathy, where microbial antigen is present but recovery of an organism is inconstant and evidence of local multiplication is lacking.

Related codes in M00

Frequently asked questions

What is ICD-10 code M00.1?

M00.1 is the ICD-10-CM code for pneumococcal arthritis and polyarthritis, in the block M00-M02 (Infectious arthropathies).

Is M00.1 a billable code?

No. M00.1 is a header code with more specific child codes; report one of the billable codes listed above.

What category does M00.1 belong to?

It belongs to category M00 – Pyogenic arthritis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.