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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  • R68.13—

    Apparent life threatening event in infant (ALTE)

  • R68.19—

    Other nonspecific symptoms peculiar to infancy

  • R68.2—

    Dry mouth, unspecified

  • R68.3—

    Clubbing of fingers

  • R68.81—

    Early satiety

  • R68.82—

    Decreased libido

  • R68.83—

    Chills (without fever)

  • R68.84—

    Jaw pain

  • R68.89—

    Other general symptoms and signs

  • R69—

    Illness, unspecified

  • R70.0—

    Elevated erythrocyte sedimentation rate

  • R70.1—

    Abnormal plasma viscosity

  • R71.0—

    Precipitous drop in hematocrit

  • R71.8—

    Other abnormality of red blood cells

  • R73.01—

    Impaired fasting glucose

  • R73.02—

    Impaired glucose tolerance (oral)

  • R73.03—

    Prediabetes

  • R73.09—

    Other abnormal glucose

  • R73.9—

    Hyperglycemia, unspecified

  • R74.01—

    Elevation of levels of liver transaminase levels

  • R74.02—

    Elevation of levels of lactic acid dehydrogenase [LDH]

  • R74.8—

    Abnormal levels of other serum enzymes

  • R74.9—

    Abnormal serum enzyme level, unspecified

  • R75—

    Inconclusive laboratory evidence of human immunodeficiency virus [HIV]

  • R76.0—

    Raised antibody titer

  • R76.11—

    Nonspecific reaction to tuberculin skin test without active tuberculosis

  • R76.12—

    Nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosis

  • R76.81—

    Abnormal rheumatoid factor and anti-citrullinated protein antibody without rheumatoid arthritis

  • R76.89—

    Other specified abnormal immunological findings in serum

  • R76.9—

    Abnormal immunological finding in serum, unspecified

  • R77.0—

    Abnormality of albumin

  • R77.1—

    Abnormality of globulin

  • R77.2—

    Abnormality of alphafetoprotein

  • R77.8—

    Other specified abnormalities of plasma proteins

  • R77.9—

    Abnormality of plasma protein, unspecified

  • R78.0—

    Finding of alcohol in blood

  • R78.1—

    Finding of opiate drug in blood

  • R78.2—

    Finding of cocaine in blood

  • R78.3—

    Finding of hallucinogen in blood

  • R78.4—

    Finding of other drugs of addictive potential in blood

  • R78.5—

    Finding of other psychotropic drug in blood

  • R78.6—

    Finding of steroid agent in blood

  • R78.71—

    Abnormal lead level in blood

  • R78.79—

    Finding of abnormal level of heavy metals in blood

  • R78.81—

    Bacteremia

  • R78.89—

    Finding of other specified substances, not normally found in blood

  • R78.9—

    Finding of unspecified substance, not normally found in blood

  • R79.0—

    Abnormal level of blood mineral

  • R79.1—

    Abnormal coagulation profile

  • R79.81—

    Abnormal blood-gas level

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