Index to Diseases and Injuries

Weight

1000-2499 grams at birth (low) — see Low, birthweight
999 grams or less at birth (extremely low) — see Low, birthweight, extreme
and length below 10th percentile for gestational age P05.1-
below but length above 10th percentile for gestational age P05.0-
gain (abnormal) (excessive) R63.5
in pregnancy — see Pregnancy, complicated by, excessive weight gain
low — see Pregnancy, complicated by, insufficient, weight gain
loss (abnormal) (cause unknown) R63.4

Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.

ICD-10-CM Index to Diseases and Injuries maintained by CDC/NCHS (public domain), from the CMS FY2027 release.