All ICD10 Codes
R94Not billable, use a more specific code below

Abnormal results of function studies

In Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94), chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings

23 billable codes under R94: none are a CC or MCC; none map to an HCC.

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Instructional notes

Includes: conditions that are coded here

  • abnormal results of radionuclide [radioisotope] uptake studies
  • abnormal results of scintigraphy

Also applies, from Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)

These notes sit on R90-R94 and apply to every code under it, including R94.

Includes: conditions that are coded here

  • nonspecific abnormal findings on diagnostic imaging by computerized axial tomography [CAT scan]
  • nonspecific abnormal findings on diagnostic imaging by magnetic resonance imaging [MRI][NMR]
  • nonspecific abnormal findings on diagnostic imaging by positron emission tomography [PET scan]
  • nonspecific abnormal findings on diagnostic imaging by thermography
  • nonspecific abnormal findings on diagnostic imaging by ultrasound [echogram]
  • nonspecific abnormal findings on diagnostic imaging by X-ray examination

Excludes1: not coded here, use a different code

  • abnormal findings on antenatal screening of mother (O28.-)
  • diagnostic abnormal findings classified elsewhere - see Alphabetical Index

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers when to report symptom, sign, and abnormal finding codes (R00-R99), plus specific rules for falls, coma scales, non-infectious SIRS, death NOS, and NIHSS scores.

Read Section I.C.18 (page 75), 1 more topics

All codes under R94

R94 can't be used on a claim. Pick a billable code below; grey headings group them.

R94 MS-DRGs

As the principal diagnosis, the billable codes under R94 group to these 25 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to R94

Notes on these codes point to R94.

  • CH10 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • CH11 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • CH12 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • CH13 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • CH14 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • CH3 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • CH6 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • CH7 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • CH8 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • CH9 Excludes2: symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • T88.7 Excludes1: specified adverse effects of drugs and medicaments (A00-R94 and T80-T88.6, T88.8)

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.