ICD-10-CM 2027
ICD-10 code for female pelvic inflammatory disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › female pelvic inflammatory”. Page updated September 29, 2026.
About coding female pelvic inflammatory disease
The ICD-10-CM code for female pelvic inflammatory disease is N73.9 (Female pelvic inflammatory disease, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on N73.9.
Within N73, choose N73.9 (Female pelvic inflammatory disease, unspecified) only when documentation doesn't support a more specific option: acute parametritis and pelvic cellulitis (N73.0), chronic parametritis and pelvic cellulitis (N73.1), unspecified parametritis and pelvic cellulitis (N73.2), female acute pelvic peritonitis (N73.3), female chronic pelvic peritonitis (N73.4), female pelvic peritonitis, unspecified (N73.5), female pelvic peritoneal adhesions (postinfective) (N73.6) and other specified female pelvic inflammatory diseases (N73.8).
Use an additional code (B95-B97), to identify infectious agent.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific female pelvic inflammatory disease codes (official index)
Common questions about female pelvic inflammatory disease ICD-10 codes
What is the ICD-10 code for female pelvic inflammatory disease?
- N73.9 — Female pelvic inflammatory disease, unspecified. More specific codes apply when the documentation supports them: A51.42, A18.17.
What is the ICD-10 code for syphilitic female pelvic inflammatory disease?
- A51.42 — Secondary syphilitic female pelvic disease.
What is the ICD-10 code for tuberculous female pelvic inflammatory disease?
- A18.17 — Tuberculous female pelvic inflammatory disease.
Is N73.9 billable?
- Yes. N73.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N73.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N73.9 as a principal diagnosis.
Is N73.9 a CC or MCC?
- No. N73.9 is neither a CC nor an MCC under MS-DRG v44.0.