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M00Non-billableSave

M00 - Pyogenic arthritis

ICD-10-CM Chapter 13: Diseases of the musculoskeletal system and connective tissue · M00-M02 Infectious arthropathies (M00-M02) · Top-level category · FY2027

Coding Guidance

M00 is a non-billable heading. Report one of the 5 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 2 — Not Included HereFrom M00

Not part of this code; report both codes when the patient has both conditions.

  • infection and inflammatory reaction due to internal joint prosthesis (T84.5-)
NotesFrom M00-M02 Infectious arthropathies (M00-M02)

Instructional notes from the ICD-10-CM tabular list.

  • 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.
Excludes 2 — Not Included HereFrom Chapter M00-M99

Not part of this code; report both codes when the patient has both conditions.

  • 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)
NotesFrom Chapter M00-M99

Instructional notes from the ICD-10-CM tabular list.

  • 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 (5)

M00.0Staphylococcal arthritis and polyarthritis→M00.1Pneumococcal arthritis and polyarthritis→M00.2Other streptococcal arthritis and polyarthritis→M00.8Arthritis and polyarthritis due to other bacteria→M00.9Pyogenic arthritis, unspecified→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with M00.