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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  • R15—

    Fecal incontinence

  • R15.0—

    Incomplete defecation

  • R15.1—

    Fecal smearing

  • R15.2—

    Fecal urgency

  • R15.9—

    Full incontinence of feces

  • R16—

    Hepatomegaly and splenomegaly, not elsewhere classified

  • R16.0—

    Hepatomegaly, not elsewhere classified

  • R16.1—

    Splenomegaly, not elsewhere classified

  • R16.2—

    Hepatomegaly with splenomegaly, not elsewhere classified

  • R17—

    Unspecified jaundice

  • R18—

    Ascites

  • R18.0—

    Malignant ascites

  • R18.8—

    Other ascites

  • R19—

    Other symptoms and signs involving the digestive system and abdomen

  • R19.0—

    Intra-abdominal and pelvic swelling, mass and lump

  • 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

  • R19.1—

    Abnormal bowel sounds

  • R19.11—

    Absent bowel sounds

  • R19.12—

    Hyperactive bowel sounds

  • R19.15—

    Other abnormal bowel sounds

  • R19.2—

    Visible peristalsis

  • R19.3—

    Abdominal rigidity

  • 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

  • R19.36—

    Epigastric abdominal rigidity

  • R19.37—

    Generalized abdominal rigidity

  • R19.4—

    Change in bowel habit

  • R19.5—

    Other fecal abnormalities

  • R19.6—

    Halitosis

  • R19.7—

    Diarrhea, unspecified

  • R19.8—

    Other specified symptoms and signs involving the digestive system and abdomen

  • R20—

    Disturbances of skin sensation

  • R20.0—

    Anesthesia of skin

  • R20.1—

    Hypoesthesia of skin

  • R20.2—

    Paresthesia of skin

  • R20.3—

    Hyperesthesia

  • R20.8—

    Other disturbances of skin sensation

  • R20.9—

    Unspecified disturbances of skin sensation

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