Alphabetic Index FY2027

N34.0

Urethral abscess

FY2027Chapter 14: Diseases of the genitourinary system/N30–N39 Other diseases of the urinary system

BillableComplete code, valid to report
Care settingsHome Health Primary · MMTA - Gastrointestinal tract and Genitourinary systemHospital CCHAC

N34.0 (also written N340) is a billable ICD-10-CM diagnosis code for urethral abscess. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 4 codes in category N34 (Urethritis and urethral syndrome). The Alphabetic Index lists it under 13 entries. Its coding notes include a Use additional code instruction, 1 Excludes1 entry and 14 Excludes2 entries.

Use additional code

Add the listed code as a secondary code, if known.

Inherited from N34 Urethritis and urethral syndrome
  • code (B95-B97), to identify infectious agent.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • urethral caruncle (N36.2)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from N34 Urethritis and urethral syndrome
  • Reiter's disease (M02.3-)
  • urethritis in diseases with a predominantly sexual mode of transmission (A50-A64)
  • urethrotrigonitis (N30.3-)
Also from chapter/block level (11 notes)
Inherited from N30–N39 Other diseases of the urinary system
  • urinary infection (complicating):
    • abortion or ectopic or molar pregnancy (O00-O07, O08.8)
    • pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)
Inherited from Chapter 14 Diseases of the genitourinary system
  • 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)

Care settings

How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

Home Health Primary

Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Gastrointestinal tract and Genitourinary system clinical group.

Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026

Hospital CC

Counts as a complication or comorbidity (CC) when reported as a secondary diagnosis on an inpatient claim. It does not count when the principal diagnosis is one of the 136 codes in its exclusion list. Some MS-DRGs also ignore a CC or MCC that defines the DRG.

Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix C

HAC

On the CMS list of hospital-acquired conditions (HAC 06: Catheter-Associated Urinary Tract Infection (UTI)). When the claim reports it with a present-on-admission (POA) indicator of N (not present) or U (documentation insufficient), CMS does not pay the CC or MCC DRG for it. A POA of Y (present) or W (clinically undetermined) is paid normally.

Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix I; CMS Hospital-Acquired Conditions (HAC) Coding page, POA indicator payment table

Inclusion terms

Conditions classified to this code.

This code
  • Abscess (of) Cowper's gland
  • Abscess (of) Littré's gland
  • Abscess (of) urethral (gland)
  • Periurethral abscess

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 13 entries

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