All ICD10 Codes

R94

Non-Billable
ChapterR00–R99
Rankcategory
Official Description

Abnormal results of function studies

Use a more specific code (6 billable, 3 non-billable)
R94.0Abnormal results of function studies of central nervous systemhas subcodesR94.1Abnormal results of function studies of peripheral nervous system and special senseshas subcodesR94.2Abnormal results of pulmonary function studiesR94.3Abnormal results of cardiovascular function studieshas subcodesR94.4Abnormal 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
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (R00-R99).

CH18 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • abnormal findings on antenatal screening of mother (O28.-)
  • certain conditions originating in the perinatal period (P04-P96)
  • signs and symptoms classified in the body system chapters
  • signs and symptoms of breast (N63, N64.5)

R90-R94 Parent Instructions

Includes
  • 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

Instructional Notes

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

Clinical Hierarchy

BillableHas subcodes
CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
R90-R94Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
R94Abnormal results of function studiesNot billable
R94.0Abnormal results of function studies of central nervous systemSubcodes
R94.1Abnormal results of function studies of peripheral nervous system and special sensesSubcodes
R94.2Abnormal results of pulmonary function studiesBillable
R94.3Abnormal results of cardiovascular function studiesSubcodes
R94.4Abnormal results of kidney function studiesBillable
R94.5Abnormal results of liver function studiesBillable
R94.6Abnormal results of thyroid function studiesBillable
R94.7Abnormal results of other endocrine function studiesBillable
R94.8Abnormal results of function studies of other organs and systemsBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R94:

blockR90-R94
Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
View context instructions
chapterCH18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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