ICD-10-CM E73: Lactose intolerance

ICD-10-CM Diagnosis Code (2025)

Official Description for E73

Lactose intolerance

Child Codes (More Specific Codes for E73):

E73.0 - Congenital lactase deficiency E73.1 - Secondary lactase deficiency E73.8 - Other lactose intolerance E73.9 - Lactose intolerance, unspecified

About ICD-10-CM Code E73 (Lactose intolerance)

ICD-10-CM code E73 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM E73 became effective on October 1, 2024.

This page provides detailed information about E73 - Lactose intolerance. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Lactose intolerance.