ICDcodes.org
FY2027

N73.4 — Female chronic pelvic peritonitis

BillableCC

Is N73.4 billable?

Yes — N73.4 is billable for FY2027. N73.4 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. N73.4 may be submitted for encounters from October 1, 2026 through September 30, 2027.

N73.4 at a glance

CodeN73.4
DescriptionFemale chronic pelvic peritonitis
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does N73.4 group to?

N73.4 sits in MDC 13 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 742Uterine and Adnexa Procedures for Non-Malignancy with CC/MCCsurgical
  • 743Uterine and Adnexa Procedures for Non-Malignancy without CC/MCCsurgical

As a secondary diagnosis, N73.4 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is N73.4 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to N73.4. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Peritonitis › pelvic › female › chronic (adhesive) (bacterial) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion)

Excludes1 — never code together

The conditions below can never be reported together with N73.4 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • tuberculous pelvic (female) peritonitis (A18.17)

Excludes1 — never code together — inherited from N70-N77

The conditions below can never be reported together with N73.4 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • inflammatory diseases of female pelvic organs complicating:
  • abortion or ectopic or molar pregnancy (O00-O07, O08.0)
  • pregnancy, childbirth and the puerperium (O23.-, O75.3, O85, O86.-)

Use additional code — inherited from N73

Report an additional code alongside N73.4 to fully describe the condition. N73.4 is sequenced first.

  • code (B95-B97), to identify infectious agent.

Excludes2 — not included here — inherited from Chapter 14

The conditions below are not part of N73.4, but a patient may have both at the same time. When documentation supports it, N73.4 and the excluded code may both be reported.

  • 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)

Code also — inherited from N70-N77

Two codes may be needed to describe the condition fully. Whether N73.4 is sequenced first depends on the reason for the encounter.

  • , if applicable, pelvic abscess (K6A.0-)

How long has N73.4 existed?

N73.4 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which conditions are coded to N73.4?

What other codes are in the N73 family? (8)