Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
R00–R99
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FY 2027 effective October 1, 2026 · 89 categories in this chapter
Blocks in This Chapter
ICD-10-CM groups this chapter's categories into 14 blocks of three-character categories.
- 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 Abnormal tumor markers
- R99 Ill-defined and unknown cause of mortality
Categories
Symptoms and signs involving the circulatory and respiratory systems (R00-R09)
- R00 Abnormalities of heart beat Has subcategories
- R01 Cardiac murmurs and other cardiac sounds Has subcategories
- R03 Abnormal blood-pressure reading, without diagnosis Has subcategories
- R04 Hemorrhage from respiratory passages Has subcategories
- R05 Cough Has subcategories
- R06 Abnormalities of breathing Has subcategories
- R07 Pain in throat and chest Has subcategories
- R09 Other symptoms and signs involving the circulatory and respiratory system Has subcategories
Symptoms and signs involving the digestive system and abdomen (R10-R19)
- R10 Abdominal and pelvic pain Has subcategories
- R11 Nausea and vomiting Has subcategories
- R12 Heartburn
- R13 Aphagia and dysphagia Has subcategories
- R14 Flatulence and related conditions Has subcategories
- R15 Fecal incontinence Has subcategories
- R16 Hepatomegaly and splenomegaly, not elsewhere classified Has subcategories
- R17 Unspecified jaundice
- R18 Ascites Has subcategories
- R19 Other symptoms and signs involving the digestive system and abdomen Has subcategories
Symptoms and signs involving the skin and subcutaneous tissue (R20-R23)
Symptoms and signs involving the nervous and musculoskeletal systems (R25-R29)
Symptoms and signs involving the genitourinary system (R30-R39)
- R30 Pain associated with micturition Has subcategories
- R31 Hematuria Has subcategories
- R32 Unspecified urinary incontinence
- R33 Retention of urine Has subcategories
- R34 Anuria and oliguria
- R35 Polyuria Has subcategories
- R36 Urethral discharge Has subcategories
- R37 Sexual dysfunction, unspecified
- R39 Other and unspecified symptoms and signs involving the genitourinary system Has subcategories
Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
- R40 Somnolence, stupor and coma Has subcategories
- R41 Other symptoms and signs involving cognitive functions and awareness Has subcategories
- R42 Dizziness and giddiness
- R43 Disturbances of smell and taste Has subcategories
- R44 Other symptoms and signs involving general sensations and perceptions Has subcategories
- R45 Symptoms and signs involving emotional state Has subcategories
- R46 Symptoms and signs involving appearance and behavior Has subcategories
Symptoms and signs involving speech and voice (R47-R49)
General symptoms and signs (R50-R69)
- R50 Fever of other and unknown origin Has subcategories
- R51 Headache Has subcategories
- R52 Pain, unspecified
- R53 Malaise and fatigue Has subcategories
- R54 Age-related physical debility
- R55 Syncope and collapse
- R56 Convulsions, not elsewhere classified Has subcategories
- R57 Shock, not elsewhere classified Has subcategories
- R58 Hemorrhage, not elsewhere classified
- R59 Enlarged lymph nodes Has subcategories
- R60 Edema, not elsewhere classified Has subcategories
- R61 Generalized hyperhidrosis
- R62 Lack of expected normal physiological development in childhood and adults Has subcategories
- R63 Symptoms and signs concerning food and fluid intake Has subcategories
- R64 Cachexia
- R65 Symptoms and signs specifically associated with systemic inflammation and infection Has subcategories
- R68 Other general symptoms and signs Has subcategories
- R69 Illness, unspecified
Abnormal findings on examination of blood, without diagnosis (R70-R79)
- R70 Elevated erythrocyte sedimentation rate and abnormality of plasma viscosity Has subcategories
- R71 Abnormality of red blood cells Has subcategories
- R73 Elevated blood glucose level Has subcategories
- R74 Abnormal serum enzyme levels Has subcategories
- R75 Inconclusive laboratory evidence of human immunodeficiency virus [HIV]
- R76 Other abnormal immunological findings in serum Has subcategories
- R77 Other abnormalities of plasma proteins Has subcategories
- R78 Findings of drugs and other substances, not normally found in blood Has subcategories
- R79 Other abnormal findings of blood chemistry Has subcategories
Abnormal findings on examination of urine, without diagnosis (R80-R82)
Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89)
- R83 Abnormal findings in cerebrospinal fluid Has subcategories
- R84 Abnormal findings in specimens from respiratory organs and thorax Has subcategories
- R85 Abnormal findings in specimens from digestive organs and abdominal cavity Has subcategories
- R86 Abnormal findings in specimens from male genital organs Has subcategories
- R87 Abnormal findings in specimens from female genital organs Has subcategories
- R88 Abnormal findings in other body fluids and substances Has subcategories
- R89 Abnormal findings in specimens from other organs, systems and tissues Has subcategories
Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
- R90 Abnormal findings on diagnostic imaging of central nervous system Has subcategories
- R91 Abnormal findings on diagnostic imaging of lung Has subcategories
- R92 Abnormal and inconclusive findings on diagnostic imaging of breast Has subcategories
- R93 Abnormal findings on diagnostic imaging of other body structures Has subcategories
- R94 Abnormal results of function studies Has subcategories