Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified R00-R99

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified R00-R99

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.

Type 2 Excludes

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)

Codes

R00-R09  Symptoms and signs involving the circulatory and respiratory systems

R10-R19  Symptoms and signs involving the digestive system and abdomen

R20-R23  Symptoms and signs involving the skin and subcutaneous tissue

R25-R29  Symptoms and signs involving the nervous and musculoskeletal systems

R30-R39  Symptoms and signs involving the genitourinary system

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

R47-R49  Symptoms and signs involving speech and voice

R50-R69  General symptoms and signs

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

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

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

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

R97-R97  Abnormal tumor markers

R99-R99  Ill-defined and unknown cause of mortality