M00.9
Billable codePyogenic arthritis, unspecified
The ICD-10 code for pyogenic arthritis, unspecified is M00.9.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Infective arthritis NOS
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M00.0Staphylococcal arthritis and polyarthritisnon-billable header
- M00.1Pneumococcal arthritis and polyarthritisnon-billable header
- M00.2Other streptococcal arthritis and polyarthritisnon-billable header
- M00.8Arthritis and polyarthritis due to other bacterianon-billable header
- M00.9Pyogenic arthritis, unspecified
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 71100Approximate match
- 71108Approximate match
Associated MS-DRGs
M00.9 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.
- DRG 485Knee Procedures with Principal Diagnosis of Infection with MCC
- DRG 486Knee Procedures with Principal Diagnosis of Infection with CC
- DRG 487Knee Procedures with Principal Diagnosis of Infection without CC/MCC
- DRG 548Septic Arthritis with MCC
- DRG 549Septic Arthritis with CC
- DRG 550Septic Arthritis without CC/MCC