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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  • R11.0—

    Nausea

  • 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

  • R13.0—

    Aphagia

  • 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

  • R14.0—

    Abdominal distension (gaseous)

  • R14.1—

    Gas pain

  • R14.2—

    Eructation

  • R14.3—

    Flatulence

  • R15.0—

    Incomplete defecation

  • R15.1—

    Fecal smearing

  • R15.2—

    Fecal urgency

  • R15.9—

    Full incontinence of feces

  • R16.0—

    Hepatomegaly, not elsewhere classified

  • R16.1—

    Splenomegaly, not elsewhere classified

  • R16.2—

    Hepatomegaly with splenomegaly, not elsewhere classified

  • R17—

    Unspecified jaundice

  • R18.0—

    Malignant ascites

  • R18.8—

    Other ascites

  • R19.00—

    Intra-abdominal and pelvic swelling, mass and lump, unspecified site

  • R19.01—

    Right upper quadrant abdominal swelling, mass and lump

  • R19.02—

    Left upper quadrant abdominal swelling, mass and lump

  • R19.03—

    Right lower quadrant abdominal swelling, mass and lump

  • R19.04—

    Left lower quadrant abdominal swelling, mass and lump

  • R19.05—

    Periumbilic swelling, mass or lump

  • R19.06—

    Epigastric swelling, mass or lump

  • R19.07—

    Generalized intra-abdominal and pelvic swelling, mass and lump

  • R19.09—

    Other intra-abdominal and pelvic swelling, mass and lump

  • R19.11—

    Absent bowel sounds

  • R19.12—

    Hyperactive bowel sounds

  • R19.15—

    Other abnormal bowel sounds

  • R19.2—

    Visible peristalsis

  • R19.30—

    Abdominal rigidity, unspecified site

  • R19.31—

    Right upper quadrant abdominal rigidity

  • R19.32—

    Left upper quadrant abdominal rigidity

  • R19.33—

    Right lower quadrant abdominal rigidity

  • R19.34—

    Left lower quadrant abdominal rigidity

  • R19.35—

    Periumbilic abdominal rigidity

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