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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.

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ℹ️ 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

Clinical Description

ICD-10-CM code R94 represents abnormal results of function studies. This code falls under the Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

Frequently Asked Questions

What is ICD-10 code R94?

ICD-10-CM code R94 is "Abnormal results of function studies". It belongs to the category: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99).

Is R94 a billable ICD-10 code?

No, R94 is a non-billable header code. A more specific child code must be used for billing.

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Code Information

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)