K56 vs P76.8
K56 and P76.8 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
Paralytic ileus and intestinal obstruction without hernia
- Chapter 11
- Diseases of the digestive system
- Section
- K55-K64
Other specified intestinal obstruction of newborn
- Chapter 16
- Certain conditions originating in the perinatal period
- Section
- P76-P78
- Fecalith › congenital (impaction)
- Obstruction, obstructed, obstructive › intestine › newborn › specified NEC
- Obstruction, obstructed, obstructive › intestine › newborn › due to › fecaliths
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