ICD-10-CM 2027
ICD-10 code for lactase deficiency
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Deficiency, deficient › lactase”. Page updated September 29, 2026.
About coding lactase deficiency
The official ICD-10-CM index doesn't give a single default code for lactase deficiency; the code depends on the details below.