M00 Header — not billable

Pyogenic arthritis

Pyogenic arthritis

M00 is a header (parent) code in the ICD-10-CM hierarchy. It is not billable for claim submission. Use one of the billable child codes listed below.

Billable codes in this category

Each of the codes below is billable. Choose the one that most accurately describes the patient's diagnosis.

M00.9
Pyogenic arthritis, unspecified

Bacterial (pyogenic) joint infection where neither the causative organism nor the specific joint has been documented — the fallback code when clinical records lack that precision.

Inclusion & exclusion notes

Excludes 2 (not included here, but may be coded together if both present)

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

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