ICD-10-CM 2027 diagnosis code

N43Hydrocele and spermatocele

Not billable — use a more specific code

N43 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About N43

N43 is the ICD-10-CM diagnosis code for hydrocele and spermatocele. It belongs to block N40-N53 (diseases of male genital organs) and chapter 14 (diseases of the genitourinary system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: N43.0 (hydrocele), N43.1 (hydrocele), N43.2 (hydrocele), N43.3 (unspecified) and N43.4 (epididymis).

Don't report N43 together with the conditions in its Excludes1 note: congenital hydrocele (P83.5).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under N43

Coding notes

IncludesFurther defines the content of the category

hydrocele of spermatic cord, testis or tunica vaginalis

Excludes1Not coded here — never report together with this code

congenital hydrocele (P83.5)

Notes that apply from higher levels

Instructions written at a parent level also apply to N43.

Broader instructions also apply from Chapter 14: Diseases of the genitourinary system.

Code history

2016
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2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about N43

Is N43 billable?: No. N43 is a header code. Report one of its more specific subcodes instead.