ICD-10-CM 2027
ICD-10 code for Hypometabolism
From the official ICD-10-CM alphabetic index entry “Hypometabolism”. Page updated September 29, 2026.
About coding Hypometabolism
The ICD-10-CM code for Hypometabolism is R63.8 (Other symptoms and signs concerning food and fluid intake).
Within R63, choose R63.8 (Other symptoms and signs concerning food and fluid intake) only when documentation doesn't support a more specific option: Anorexia (R63.0), Polydipsia (R63.1), Polyphagia (R63.2), feeding difficulties (R63.3), abnormal weight loss (R63.4), abnormal weight gain (R63.5) and Underweight (R63.6).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 640 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC, relative weight 1.3395) and DRG 641 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC, relative weight 0.7865), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Hypometabolism ICD-10 codes
What is the ICD-10 code for Hypometabolism?
- R63.8 — Other symptoms and signs concerning food and fluid intake.
Is R63.8 billable?
- Yes. R63.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R63.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R63.8 as a principal diagnosis.
Is R63.8 a CC or MCC?
- No. R63.8 is neither a CC nor an MCC under MS-DRG v44.0.