E73.9
BillableLactose intolerance, unspecified
Lactose intolerance, unspecified
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Related Codes(3)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(44)
SNOMED CT
UMLS
- AlactasiaC0022951
- Dairy Product IntoleranceC0022951
- Dairy product intoleranceC0022951
- HypolactasiaC0022951
- Intolerance to lactoseC0022951
- Intolerance to lactose (finding)C0022951
- Intolerance, LactoseC0022951
- Lactose IntoleranceC0022951
- Lactose MalabsorptionC0022951
- Lactose intoleranceC0022951
- Lactose intolerance, unspecifiedC0022951
- Lactose malabsorptionC0022951
- Malabsorption, LactoseC0022951
- Milk IntoleranceC0022951
- Milk Sugar IntoleranceC0022951
- Milk intoleranceC0022951
- Milk sugar intoleranceC0022951
- cow's milk enteropathyC0022951
- lactose intoleranceC0022951
- milk intoleranceC0022951
Clinical Terms
- Intolerance to lactose
- Alactasia
- Disaccharide malabsorption
- Dairy Product Intolerance
- Lactose Malabsorption
- Milk sugar intolerance
- milk intolerance
- Intolerance to lactose (finding)
- Sucrosuria
- Malabsorption, Lactose
- cow's milk enteropathy
- Lactase deficiency
- Intestinal disaccharidase deficiency
- Disaccharidase deficiency
- Malabsorption syndrome due to intolerance to lactose
- Intolerance, Lactose
- Hypolactasia
Frequently Asked Questions
What is the ICD-10 code for lactose intolerance, unspecified?
The ICD-10-CM code for lactose intolerance, unspecified is E73.9. The full clinical description is "Lactose intolerance, unspecified". E73.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code E73.9 mean?
ICD-10-CM code E73.9 represents “Lactose intolerance, unspecified”. It is classified under Chapter 4: Endocrine, Nutritional and Metabolic Diseases and is a billable/specific code that can be used on a claim.
Is E73.9 a billable code?
Yes, E73.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is E73.9 in?
E73.9 is in Chapter 4: Endocrine, Nutritional and Metabolic Diseases (codes E00-E89).
What codes cannot be used with E73.9?
E73.9 has Excludes1 notes indicating codes that cannot be used together with it, including: transitory endocrine and metabolic disorders specific to newborn (P70-P74); androgen insensitivity syndrome (E34.5-); congenital adrenal hyperplasia (E25.0); and 3 more.
What SNOMED CT codes does E73.9 map to?
E73.9 maps to 6 SNOMED CT concepts: 267427000, 22169002, 782415009, 237975008, 785696007, and 1 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for E73.9?
E73.9 is linked to 1 UMLS Concept Unique Identifier: C0022951. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does E73.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like lactose intolerance, unspecified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of E73.9?
E73.9 maps to the ICD-11 code: 5C61.6Z (Lactose intolerance, unspecified).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.