All ICD10 Codes
Chapter 18

R00–R99: Symptoms, Signs and Abnormal Clinical and Laboratory Findings

Symptoms, Signs and Abnormal Clinical and Laboratory Findings diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • abnormal findings on antenatal screening of mother (O28.-)
  • certain conditions originating in the perinatal period (P04-P96)
  • signs and symptoms classified in the body system chapters
  • signs and symptoms of breast (N63, N64.5)
All CodesBillable Only
Internal Codes
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  • R10.819—

    Abdominal tenderness, unspecified site

  • R10.82—

    Rebound abdominal tenderness

  • R10.821—

    Right upper quadrant rebound abdominal tenderness

  • R10.822—

    Left upper quadrant rebound abdominal tenderness

  • R10.823—

    Right lower quadrant rebound abdominal tenderness

  • R10.824—

    Left lower quadrant rebound abdominal tenderness

  • R10.825—

    Periumbilic rebound abdominal tenderness

  • R10.826—

    Epigastric rebound abdominal tenderness

  • R10.827—

    Generalized rebound abdominal tenderness

  • R10.829—

    Rebound abdominal tenderness, unspecified site

  • R10.83—

    Colic

  • R10.84—

    Generalized abdominal pain

  • R10.85—

    Abdominal pain of multiple sites

  • R10.8A—

    Flank tenderness

  • R10.8A1—

    Right flank tenderness

  • R10.8A2—

    Left flank tenderness

  • R10.8A3—

    Suprapubic tenderness

  • R10.8A9—

    Flank tenderness, unspecified

  • R10.9—

    Unspecified abdominal pain

  • R10.A—

    Pain localized to flank

  • R10.A0—

    Flank pain, unspecified side

  • R10.A1—

    Flank pain, right side

  • R10.A2—

    Flank pain, left side

  • R10.A3—

    Flank pain, bilateral

  • R11—

    Nausea and vomiting

  • R11.0—

    Nausea

  • R11.1—

    Vomiting

  • R11.10—

    Vomiting, unspecified

  • R11.11—

    Vomiting without nausea

  • R11.12—

    Projectile vomiting

  • R11.13—

    Vomiting of fecal matter

  • R11.14—

    Bilious vomiting

  • R11.15—

    Cyclical vomiting syndrome unrelated to migraine

  • R11.16—

    Cannabis hyperemesis syndrome

  • R11.2—

    Nausea with vomiting, unspecified

  • R12—

    Heartburn

  • R13—

    Aphagia and dysphagia

  • R13.0—

    Aphagia

  • R13.1—

    Dysphagia

  • R13.10—

    Dysphagia, unspecified

  • R13.11—

    Dysphagia, oral phase

  • R13.12—

    Dysphagia, oropharyngeal phase

  • R13.13—

    Dysphagia, pharyngeal phase

  • R13.14—

    Dysphagia, pharyngoesophageal phase

  • R13.19—

    Other dysphagia

  • R14—

    Flatulence and related conditions

  • R14.0—

    Abdominal distension (gaseous)

  • R14.1—

    Gas pain

  • R14.2—

    Eructation

  • R14.3—

    Flatulence

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