ICD-10-CM Codes 2026 (USA)

• R10.821	Right upper quadrant rebound abdominal tenderness

• R10.0	Acute abdomen
  R10.10	Upper abdominal pain, unspecified
  R10.11	Right upper quadrant pain
  R10.12	Left upper quadrant pain
  R10.13	Epigastric pain
  R10.2	Pelvic and perineal pain
  R10.30	Lower abdominal pain, unspecified
  R10.31	Right lower quadrant pain
  R10.32	Left lower quadrant pain
  R10.33	Periumbilical pain
  R10.811	Right upper quadrant abdominal tenderness
  R10.812	Left upper quadrant abdominal tenderness
  R10.813	Right lower quadrant abdominal tenderness
  R10.814	Left lower quadrant abdominal tenderness
  R10.815	Periumbilic abdominal tenderness
  R10.816	Epigastric abdominal tenderness
  R10.817	Generalized abdominal tenderness
  R10.819	Abdominal tenderness, unspecified site
  R10.821	Right upper quadrant rebound abdominal tenderness
  R10.822	Left upper quadrant rebound abdominal tenderness

Created by Peter Blahut, MD