Skip to content

R63.5

Billable

Abnormal weight gain

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Unintended gain of body weight that occurs without increased caloric intake, potentially indicating metabolic, hormonal, or fluid retention issues.

Coding Tips

  • Document the amount of weight gain and timeframe to establish medical significance
  • Investigate for underlying causes such as hypothyroidism, fluid retention, medication side effects, or metabolic syndrome

Excludes 1 — Do NOT code together

  • excessive weight gain in pregnancy (O26.0-)
  • obesity (E66.-)

Code Hierarchy

Open R63.5 in the Interactive Encoder

See full code details, AI coding tips, HCC mappings, and related codes in our interactive encoder. Start your 14-day Pro trial — no credit card required.