XVIII: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
The group of conditions under "Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified" encompasses a wide range of medical occurrences that might be puzzling or might not fit into any other existing disease or condition categories. These symptoms can be physical signs observed by a healthcare professional, lab results that fall outside of the normal range, or effects reported by the patient that don't match a specific diagnosis. Because these symptoms and findings are varied, the causes too are diverse, ranging from unknown illnesses to non-illness related abnormalities. These conditions can impact different body systems and their progression can vary greatly. The common thread among these conditions is the lack of a defined disease or disorder in which they perfectly fit into, presenting a significant challenge for a precise, pin-pointed categorization or diagnosis.
Subcodes of XVIII:
- 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 urinary system
- R40-R46: Symptoms and signs involving cognition, perception, emotional state and behaviour
- 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
- R95-R99: Ill-defined and unknown causes of mortality
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.