ICD-10-CM Chapter 18: 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)

Section R00-R09: Symptoms and signs involving the circulatory and respiratory systems (R00-R09)
Section R10-R19: Symptoms and signs involving the digestive system and abdomen (R10-R19)
Section R20-R23: Symptoms and signs involving the skin and subcutaneous tissue (R20-R23)
Section R25-R29: Symptoms and signs involving the nervous and musculoskeletal systems (R25-R29)
Section R30-R39: Symptoms and signs involving the genitourinary system (R30-R39)
Section R40-R46: Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
Section R47-R49: Symptoms and signs involving speech and voice (R47-R49)
Section R50-R69: General symptoms and signs (R50-R69)
Section R70-R79: Abnormal findings on examination of blood, without diagnosis (R70-R79)
Section R80-R82: Abnormal findings on examination of urine, without diagnosis (R80-R82)
Section R83-R89: Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89)
Section R90-R94: Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
Section R97: Abnormal tumor markers (R97)
Section R99: Ill-defined and unknown cause of mortality (R99)