Excludes1 pair

I86.3 vs O87.8

I86.3 and O87.8 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 I86.3
vulval varices complicating childbirth and the puerperium (O87.8)
I86.3

Vulval varices

Billable
Chapter 9
Diseases of the circulatory system
Section
I80-I89
Indexed under
  • Varicocele › perineum
  • Varix › labia (majora)
  • Varix › perineum
  • Varix › vulva
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative › varicose › perineum
O87.8

Other venous complications in the puerperium

Billable
Chapter 15
Pregnancy, childbirth and the puerperium
Section
O85-O92
Use when the record says
  • Genital varices in the puerperium
Indexed under
  • Puerperal, puerperium › varicose veins › vulva or perineum
  • Varix › complicating › childbirth › genital (vagina, vulva or perineum)
  • Varix › complicating › puerperium › genital (vagina, vulva, perineum)

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