R63.5
BillableAbnormal weight gain
Abnormal weight gain
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
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(20)
SNOMED CT
UMLS
Clinical Terms
- Unintentional weight gain
- abnormal gain weight
- Excessive weight gain
- Abnormal increase in weight
- Abnormal weight gain (finding)
- Involuntary weight gain
- Weight increased
- Weight gain
Frequently Asked Questions
What is the ICD-10 code for abnormal weight gain?
The ICD-10-CM code for abnormal weight gain is R63.5. The full clinical description is "Abnormal weight gain". R63.5 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code R63.5 mean?
ICD-10-CM code R63.5 represents “Abnormal weight gain”. 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 R63.5 a billable code?
Yes, R63.5 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is R63.5 in?
R63.5 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).
What codes cannot be used with R63.5?
R63.5 has Excludes1 notes indicating codes that cannot be used together with it, including: bulimia NOS (F50.2-); excessive weight gain in pregnancy (O26.0-); obesity (E66.-).
What SNOMED CT codes does R63.5 map to?
R63.5 maps to 4 SNOMED CT concepts: 161833006, 224994002, 441361000124104, 262286000. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for R63.5?
R63.5 is linked to 1 UMLS Concept Unique Identifier: C0332544. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does R63.5 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like abnormal weight gain 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 R63.5?
R63.5 maps to the ICD-11 code: MG43.6 (Excessive weight gain).
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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.