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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  • R09.3—

    Abnormal sputum

  • R09.81—

    Nasal congestion

  • R09.82—

    Postnasal drip

  • R09.89—

    Other specified symptoms and signs involving the circulatory and respiratory systems

  • R09.A0—

    Foreign body sensation, unspecified

  • R09.A1—

    Foreign body sensation, nose

  • R09.A2—

    Foreign body sensation, throat

  • R09.A9—

    Foreign body sensation, other site

  • 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

  • R10.20—

    Pelvic and perineal pain unspecified side

  • R10.21—

    Pelvic and perineal pain right side

  • R10.22—

    Pelvic and perineal pain left side

  • R10.23—

    Pelvic and perineal pain bilateral

  • R10.24—

    Suprapubic 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

  • 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

  • R10.8A1—

    Right flank tenderness

  • R10.8A2—

    Left flank tenderness

  • R10.8A3—

    Suprapubic tenderness

  • R10.8A9—

    Flank tenderness, unspecified

  • R10.9—

    Unspecified abdominal pain

  • R10.A0—

    Flank pain, unspecified side

  • R10.A1—

    Flank pain, right side

  • R10.A2—

    Flank pain, left side

  • R10.A3—

    Flank pain, bilateral

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