N73.9
Female pelvic inflammatory disease, unspecified
N73.9 (also written N739) is a billable ICD-10-CM diagnosis code for female pelvic inflammatory disease, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 9 codes in category N73 (Other female pelvic inflammatory diseases). The Alphabetic Index lists it under 2 entries. Its coding notes include a Use additional code instruction, a Code also instruction, 3 Excludes1 entries and 8 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- 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)
Inclusion terms
Conditions classified to this code.
- Female pelvic infection or inflammation NOS
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 2 entries