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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