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N73 ICD-10-CM Code: Other female pelvic inflammatory diseases

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FY 2026 Apr update / Diseases of the genitourinary system (N00-N99) / Inflammatory diseases of female pelvic organs (N70-N77)

N73

Header CodeICD-10-CMOfficial ICD-10-CMCodebook guidance

Other female pelvic inflammatory diseases

Other female pelvic inflammatory diseases

CMS-HCC V28

0

0

RAF 0

CMS-HCC V24

0

0

RAF 0

ACA/HHS

0

0

RAF 0

ESRD/PACE

0

0

RAF 0

RXHCC

0

0

RAF 0

Code Trumping

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Code Book Path

Official
N7Inflammatory diseases of female pelvic organs (N70-N77)
N73Other female pelvic inflammatory diseases

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for N73 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for N73 in this effective period.

Related Child Codes

Official
N73.0Acute parametritis and pelvic cellulitis
N73.1Chronic parametritis and pelvic cellulitis
N73.2Unspecified parametritis and pelvic cellulitis
N73.3Female acute pelvic peritonitis
N73.4Female chronic pelvic peritonitis

Includes

Official

ICD-10-CM does not list Includes notes for N73 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for N73 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for N73 in this effective period.

Use Additional

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

Code Also

Official

ICD-10-CM does not list Code Also instructions for N73 in this effective period.

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

What This Code Means

N73 is the ICD-10-CM diagnosis code for other female pelvic inflammatory diseases. N73 sits in the ICD-10-CM chapter for diseases of the genitourinary system (n00-n99), within the section covering inflammatory diseases of female pelvic organs (n70-n77).

Header codes like N73 cannot be reported on claims directly, they organize child codes that share clinical context but the actual diagnosis must be coded to the highest level of specificity supported by the documentation. Coders should look at N73's child codes and select the one that matches the patient's documented presentation, since payers reject header codes submitted as the primary diagnosis. For risk adjustment workflows, header codes never contribute to a Medicare Advantage member's RAF score on their own; only billable child codes that happen to map to a payment HCC affect risk-adjusted plan payments.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for N73 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Use Additional Code

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

Child Codes

Code Hierarchy

N73Other female pelvic inflammatory diseases
N73Other female pelvic inflammatory diseases

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