Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)

Note: This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.

Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.

The conditions and signs or symptoms included in categories R00-R94 consist of:
(a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
(b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
(c) provisional diagnosis in a patient who failed to return for further investigation or care;
(d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
(e) cases in which a more precise diagnosis was not available for any other reason;
(f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.

• Symptoms and signs involving the circulatory and respiratory systems (R00-R09)

  • Abnormalities of heart beat (R00)
  • Cardiac murmurs and other cardiac sounds (R01)
  • Abnormal blood-pressure reading, without diagnosis (R03)
  • Hemorrhage from respiratory passages (R04)
  • Cough (R05)
  • Abnormalities of breathing (R06)
  • Pain in throat and chest (R07)
  • Other symptoms and signs involving the circulatory and respiratory system (R09)

• Symptoms and signs involving the digestive system and abdomen (R10-R19)

  • Abdominal and pelvic pain (R10)
  • Nausea and vomiting (R11)
  • Heartburn (R12)
  • Aphagia and dysphagia (R13)
  • Flatulence and related conditions (R14)
  • Fecal incontinence (R15)
  • Hepatomegaly and splenomegaly, not elsewhere classified (R16)
  • Unspecified jaundice (R17)
  • Ascites (R18)
  • Other symptoms and signs involving the digestive system and abdomen (R19)

• Symptoms and signs involving the skin and subcutaneous tissue (R20-R23)

  • Disturbances of skin sensation (R20)
  • Rash and other nonspecific skin eruption (R21)
  • Localized swelling, mass and lump of skin and subcutaneous tissue (R22)
  • Other skin changes (R23)

• Symptoms and signs involving the nervous and musculoskeletal systems (R25-R29)

  • Abnormal involuntary movements (R25)
  • Abnormalities of gait and mobility (R26)
  • Other lack of coordination (R27)
  • Other symptoms and signs involving the nervous and musculoskeletal systems (R29)

• Symptoms and signs involving the genitourinary system (R30-R39)

  • Pain associated with micturition (R30)
  • Hematuria (R31)
  • Unspecified urinary incontinence (R32)
  • Retention of urine (R33)
  • Anuria and oliguria (R34)
  • Polyuria (R35)
  • Urethral discharge (R36)
  • Sexual dysfunction, unspecified (R37)
  • Other and unspecified symptoms and signs involving the genitourinary system (R39)

• Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)

  • Somnolence, stupor and coma (R40)
  • Other symptoms and signs involving cognitive functions and awareness (R41)
  • Dizziness and giddiness (R42)
  • Disturbances of smell and taste (R43)
  • Other symptoms and signs involving general sensations and perceptions (R44)
  • Symptoms and signs involving emotional state (R45)
  • Symptoms and signs involving appearance and behavior (R46)

• Symptoms and signs involving speech and voice (R47-R49)

  • Speech disturbances, not elsewhere classified (R47)
  • Dyslexia and other symbolic dysfunctions, not elsewhere classified (R48)
  • Voice and resonance disorders (R49)

• General symptoms and signs (R50-R69)

  • Fever of other and unknown origin (R50)
  • Headache (R51)
  • Pain, unspecified (R52)
  • Malaise and fatigue (R53)
  • Age-related physical debility (R54)
  • Syncope and collapse (R55)
  • Convulsions, not elsewhere classified (R56)
  • Shock, not elsewhere classified (R57)
  • Hemorrhage, not elsewhere classified (R58)
  • Enlarged lymph nodes (R59)
  • Edema, not elsewhere classified (R60)
  • Generalized hyperhidrosis (R61)
  • Lack of expected normal physiological development in childhood and adults (R62)
  • Symptoms and signs concerning food and fluid intake (R63)
  • Cachexia (R64)
  • Symptoms and signs specifically associated with systemic inflammation and infection (R65)
  • Other general symptoms and signs (R68)
  • Illness, unspecified (R69)

• Abnormal findings on examination of blood, without diagnosis (R70-R79)

  • Elevated erythrocyte sedimentation rate and abnormality of plasma viscosity (R70)
  • Abnormality of red blood cells (R71)
  • Elevated blood glucose level (R73)
  • Abnormal serum enzyme levels (R74)
  • Inconclusive laboratory evidence of human immunodeficiency virus [HIV] (R75)
  • Other abnormal immunological findings in serum (R76)
  • Other abnormalities of plasma proteins (R77)
  • Findings of drugs and other substances, not normally found in blood (R78)
  • Other abnormal findings of blood chemistry (R79)

• Abnormal findings on examination of urine, without diagnosis (R80-R82)

  • Proteinuria (R80)
  • Glycosuria (R81)
  • Other and unspecified abnormal findings in urine (R82)

• Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89)

  • Abnormal findings in cerebrospinal fluid (R83)
  • Abnormal findings in specimens from respiratory organs and thorax (R84)
  • Abnormal findings in specimens from digestive organs and abdominal cavity (R85)
  • Abnormal findings in specimens from male genital organs (R86)
  • Abnormal findings in specimens from female genital organs (R87)
  • Abnormal findings in other body fluids and substances (R88)
  • Abnormal findings in specimens from other organs, systems and tissues (R89)

• Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)

  • Abnormal findings on diagnostic imaging of central nervous system (R90)
  • Abnormal findings on diagnostic imaging of lung (R91)
  • Abnormal and inconclusive findings on diagnostic imaging of breast (R92)
  • Abnormal findings on diagnostic imaging of other body structures (R93)
  • Abnormal results of function studies (R94)

• Abnormal tumor markers (R97)

  • Abnormal tumor markers (R97)

• Ill-defined and unknown cause of mortality (R99)

  • Ill-defined and unknown cause of mortality (R99)