ICD-10-CM 2027
ICD-10 code for appetite lack of
From the official ICD-10-CM alphabetic index entry “Lack of › appetite (see Anorexia)”. Page updated September 29, 2026.
About coding appetite lack of
The ICD-10-CM code for appetite lack of is R63.0 (Anorexia).
Within R63 (symptoms and signs concerning food and fluid intake), R63.0 is specifically for Anorexia. Related codes cover Polydipsia (R63.1), Polyphagia (R63.2), feeding difficulties (R63.3), abnormal weight loss (R63.4), abnormal weight gain (R63.5), Underweight (R63.6) and other symptoms and signs concerning food and fluid intake (R63.8).
Don't report R63.0 together with the conditions in its Excludes1 note: anorexia nervosa (F50.0-) and loss of appetite of nonorganic origin (F50.89).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for R63.0)
Common questions about appetite lack of ICD-10 codes
What is the ICD-10 code for appetite lack of?
- R63.0 — Anorexia.
Is R63.0 billable?
- Yes. R63.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R63.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R63.0 as a principal diagnosis.
Is R63.0 a CC or MCC?
- No. R63.0 is neither a CC nor an MCC under MS-DRG v44.0.