ICD-10-CM 2027
ICD-10 code for hydrocele
From the official ICD-10-CM alphabetic index entry “Hydrocele (spermatic cord) (testis) (tunica vaginalis)”. Page updated September 29, 2026.
About coding hydrocele
The ICD-10-CM code for hydrocele is N43.3 (Hydrocele, unspecified). The official index lists 11 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on N43.3.
Within N43, choose N43.3 (Hydrocele, unspecified) only when documentation doesn't support a more specific option: Encysted hydrocele (N43.0), infected hydrocele (N43.1), other hydrocele (N43.2) and spermatocele of epididymis (N43.4).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 729 (Other Male Reproductive System Diagnoses with CC/MCC, relative weight 1.0544) and DRG 730 (Other Male Reproductive System Diagnoses without CC/MCC, relative weight 0.6597), in MDC 12 (Diseases and Disorders of the Male Reproductive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific hydrocele codes (official index)
- canal of Nuck N94.89 — Other specified conditions associated with female genital organs and menstrual cycle
- communicating N43.2 — Other hydrocele
- congenital P83.5 — Congenital hydrocele
- congenital P83.5 — Congenital hydrocele
- encysted N43.0 — Encysted hydrocele
- female NEC N94.89 — Other specified conditions associated with female genital organs and menstrual cycle
- infected N43.1 — Infected hydrocele
- newborn P83.5 — Congenital hydrocele
- round ligament N94.89 — Other specified conditions associated with female genital organs and menstrual cycle
- specified NEC N43.2 — Other hydrocele
- spinalis
- vulva N90.89 — Other specified noninflammatory disorders of vulva and perineum
Common questions about hydrocele ICD-10 codes
What is the ICD-10 code for hydrocele?
- N43.3 — Hydrocele, unspecified. More specific codes apply when the documentation supports them: N94.89, N43.2, P83.5, P83.5 and others below.
What is the ICD-10 code for canal of nuck hydrocele?
- N94.89 — Other specified conditions associated with female genital organs and menstrual cycle.
What is the ICD-10 code for communicating hydrocele?
- N43.2 — Other hydrocele.
What is the ICD-10 code for congenital hydrocele?
- P83.5 — Congenital hydrocele.
What is the ICD-10 code for encysted hydrocele?
- N43.0 — Encysted hydrocele.
What is the ICD-10 code for female nec hydrocele?
- N94.89 — Other specified conditions associated with female genital organs and menstrual cycle.
What is the ICD-10 code for infected hydrocele?
- N43.1 — Infected hydrocele.
Is N43.3 billable?
- Yes. N43.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N43.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N43.3 as a principal diagnosis.
Is N43.3 a CC or MCC?
- No. N43.3 is neither a CC nor an MCC under MS-DRG v44.0.