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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  • R07.1—

    Chest pain on breathing

  • R07.2—

    Precordial pain

  • R07.8—

    Other chest pain

  • R07.81—

    Pleurodynia

  • R07.82—

    Intercostal pain

  • R07.89—

    Other chest pain

  • R07.9—

    Chest pain, unspecified

  • R09—

    Other symptoms and signs involving the circulatory and respiratory system

  • R09.0—

    Asphyxia and hypoxemia

  • R09.01—

    Asphyxia

  • R09.02—

    Hypoxemia

  • R09.1—

    Pleurisy

  • R09.2—

    Respiratory arrest

  • R09.3—

    Abnormal sputum

  • R09.8—

    Other specified symptoms and signs involving the circulatory and respiratory systems

  • R09.81—

    Nasal congestion

  • R09.82—

    Postnasal drip

  • R09.89—

    Other specified symptoms and signs involving the circulatory and respiratory systems

  • R09.A—

    Foreign body sensation of the circulatory and respiratory system

  • 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—

    Abdominal and pelvic pain

  • R10.0—

    Acute abdomen

  • R10.1—

    Pain localized to upper 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

  • R10.20—

    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

  • R10.3—

    Pain localized to other parts of lower abdomen

  • R10.30—

    Lower abdominal pain, unspecified

  • R10.31—

    Right lower quadrant pain

  • R10.32—

    Left lower quadrant pain

  • R10.33—

    Periumbilical pain

  • R10.8—

    Other abdominal pain

  • R10.81—

    Abdominal tenderness

  • 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

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