Excludes1 pair

P84 vs P91-

P84 and P91 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 P84
hypoxic ischemic encephalopathy [HIE] (P91.6-)
P84

Other problems with newborn

Billable
Chapter 16
Certain conditions originating in the perinatal period
Section
P84
Use when the record says
  • Acidemia of newborn
  • Acidosis of newborn
  • Anoxia of newborn NOS
  • Asphyxia of newborn NOS
  • Hypercapnia of newborn
  • Hypoxemia of newborn
  • Hypoxia of newborn NOS
  • Mixed metabolic and respiratory acidosis of newborn
Indexed under
  • Acidosis › mixed metabolic and respiratory, newborn
  • Acidosis › newborn
  • Anoxemia › newborn
  • Anoxia › intrauterine
  • Anoxia › newborn
P91

Other disturbances of cerebral status of newborn

Not billable
Chapter 16
Certain conditions originating in the perinatal period
Section
P90-P96

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