R94
⚠ Non-billable (Header)Abnormal results of function studies
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ Includes
- • abnormal results of radionuclide [radioisotope] uptake studies
- • abnormal results of scintigraphy
Child Codes (9)
R94.0Abnormal results of function studies of central nervous systemR94.1Abnormal results of function studies of peripheral nervous system and special sensesR94.2Abnormal results of pulmonary function studiesR94.3Abnormal results of cardiovascular function studiesR94.4Abnormal results of kidney function studiesR94.5Abnormal results of liver function studiesR94.6Abnormal results of thyroid function studiesR94.7Abnormal results of other endocrine function studiesR94.8Abnormal results of function studies of other organs and systems
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CodeR94
BillableNo — Header code
CategorySymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Excludes10 rule(s)
Excludes20 note(s)
Child codes9
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)