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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  • R10.819|

    Abdominal tenderness, unspecified site

  • R10.82|

    Rebound abdominal tenderness

  • 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

  • R10.8A|

    Flank tenderness

  • 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.A|

    Pain localized to flank

  • R10.A0|

    Flank pain, unspecified side

  • R10.A1|

    Flank pain, right side

  • R10.A2|

    Flank pain, left side

  • R10.A3|

    Flank pain, bilateral

  • R11|

    Nausea and vomiting

  • R11.0|

    Nausea

  • R11.1|

    Vomiting

  • 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|

    Aphagia and dysphagia

  • R13.0|

    Aphagia

  • R13.1|

    Dysphagia

  • 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|

    Flatulence and related conditions

  • R14.0|

    Abdominal distension (gaseous)

  • R14.1|

    Gas pain

  • R14.2|

    Eructation

  • R14.3|

    Flatulence

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