Alphabetic Index FY2027

M00.1

Pneumococcal arthritis and polyarthritis

FY2027Chapter 13: Diseases of the musculoskeletal system and connective tissue/M00–M02 Infectious arthropathies

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

M00.1 is a non-billable ICD-10-CM code header for pneumococcal arthritis and polyarthritis. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are M00.10 Pneumococcal arthritis, unspecified joint; M00.11 Pneumococcal arthritis, shoulder; M00.12 Pneumococcal arthritis, elbow; M00.13 Pneumococcal arthritis, wrist and 6 more. Its coding notes include 11 Excludes2 entries.

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from M00 Pyogenic arthritis
  • infection and inflammatory reaction due to internal joint prosthesis (T84.5-)
Also from chapter/block level (10 notes)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • 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

Also from chapter/block level (4 notes)
Inherited from M00–M02 Infectious arthropathies
  • 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.
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

More specific codes under M00.1 10