FY2027
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Excludes1 pair

N43- vs P83.5

N43 and P83.5 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.

The official note, declared on N43
congenital hydrocele (P83.5)
N43

Hydrocele and spermatocele

Not billable
Chapter 14
Diseases of the genitourinary system
Section
N40-N53
Use when the record says
  • hydrocele of spermatic cord, testis or tunica vaginalis
P83.5

Congenital hydrocele

Billable
Chapter 16
Certain conditions originating in the perinatal period
Section
P80-P83
Indexed under
  • Hydrocele › congenital
  • Hydrocele › newborn
  • Hydrocele › communicating › congenital
  • Anomaly, anomalous › genitalia, genital organ or system › male › hydrocele

These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.

Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027