R63.4
BillableAbnormal weight loss
Abnormal weight loss
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •abnormal findings on antenatal screening of motherO28
- •certain conditions originating in the perinatal periodP04-P96
- signs and symptoms classified in the body system chapters
- •signs and symptoms of breast,N63, N64.5
Related Codes(7)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(32)
SNOMED CT
- Weight decreased262285001
- Weight loss262285001
- Abnormal decrease in weight267024001
- Abnormal weight loss267024001
- Excessive weight loss309257005
- Intentional weight loss416528001
- AIDS-associated abnormal weight loss421695000
- Abnormal weight loss associated with AIDS421695000
- Abnormal weight loss associated with acquired immunodeficiency syndrome421695000
- Unexplained weight loss422868009
- Abnormal intentional weight loss430237002
- Involuntary weight loss448765001
- Unintentional weight loss448765001
UMLS
Clinical Terms
- Abnormal decrease in weight
- Abnormal loss of weight
- AIDS-associated abnormal weight loss
- Abnormal weight loss associated with AIDS
- Intentional weight loss
- Abnormal intentional weight loss
- Involuntary weight loss
- Weight decreased
- Abnormal weight loss (finding)
- Weight loss
- Excessive weight loss
- Unintentional weight loss
- Unexplained weight loss
- Abnormal weight loss associated with acquired immunodeficiency syndrome
Frequently Asked Questions
What is the ICD-10 code for abnormal weight loss?
The ICD-10-CM code for abnormal weight loss is R63.4. The full clinical description is "Abnormal weight loss". R63.4 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code R63.4 mean?
ICD-10-CM code R63.4 represents “Abnormal weight loss”. It is classified under Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings and is a billable/specific code that can be used on a claim.
Is R63.4 a billable code?
Yes, R63.4 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is R63.4 in?
R63.4 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).
What codes cannot be used with R63.4?
R63.4 has Excludes1 notes indicating codes that cannot be used together with it, including: bulimia NOS (F50.2-).
What SNOMED CT codes does R63.4 map to?
R63.4 maps to 8 SNOMED CT concepts: 421695000, 267024001, 430237002, 309257005, 416528001, and 3 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for R63.4?
R63.4 is linked to 1 UMLS Concept Unique Identifier: C0936227. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does R63.4 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like abnormal weight loss 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 R63.4?
R63.4 maps to the ICD-11 code: MG43.5 (Excessive weight loss).
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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.