MCMedicalCodingSoftware
E73

E73: Lactose intolerance

Non-billable headerICD-10-CM

E73 is a non-billable header ICD-10-CM code for lactose intolerance. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with E73

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Z91.011Allergy to milk products
  • R79Other abnormal findings of blood chemistry

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead E73

4 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.