ICD-10-CM R94: Abnormal results of function studies

ICD-10-CM Diagnosis Code (2025)

Official Description for R94

Abnormal results of function studies

Coding Notes & Guidelines for R94

Includes Notes
  • abnormal results of radionuclide [radioisotope] uptake studies
  • abnormal results of scintigraphy
Excludes1: Not Coded Here

electromyogram of eye (R94.113)

Excludes1: Not Coded Here

long QT syndrome (I45.81)

Excludes2: Not Included Here

abnormal glucose (R73.0-)

Inclusion Terms

Abnormal retinal function study

Inclusion Terms
  • Reduced ventilatory capacity
  • Reduced vital capacity
Inclusion Terms
  • Abnormal electrophysiological intracardiac studies
  • Abnormal phonocardiogram
  • Abnormal vectorcardiogram
Inclusion Terms

Abnormal renal function test

Inclusion Terms
  • Abnormal basal metabolic rate [BMR]
  • Abnormal bladder function test
  • Abnormal splenic function test

Child Codes (More Specific Codes for R94):

R94.0 - Abnormal results of function studies of central nervous system R94.01 - Abnormal electroencephalogram [EEG] R94.02 - Abnormal brain scan R94.09 - Abnormal results of other function studies of central nervous system R94.1 - Abnormal results of function studies of peripheral nervous system and special senses R94.11 - Abnormal results of function studies of eye R94.110 - Abnormal electro-oculogram [EOG] R94.111 - Abnormal electroretinogram [ERG] R94.112 - Abnormal visually evoked potential [VEP] R94.113 - Abnormal oculomotor study R94.118 - Abnormal results of other function studies of eye R94.12 - Abnormal results of function studies of ear and other special senses R94.120 - Abnormal auditory function study R94.121 - Abnormal vestibular function study R94.128 - Abnormal results of other function studies of ear and other special senses R94.13 - Abnormal results of function studies of peripheral nervous system R94.130 - Abnormal response to nerve stimulation, unspecified R94.131 - Abnormal electromyogram [EMG] R94.138 - Abnormal results of other function studies of peripheral nervous system R94.2 - Abnormal results of pulmonary function studies R94.3 - Abnormal results of cardiovascular function studies R94.30 - Abnormal result of cardiovascular function study, unspecified R94.31 - Abnormal electrocardiogram [ECG] [EKG] R94.39 - Abnormal result of other cardiovascular function study R94.4 - Abnormal results of kidney function studies R94.5 - Abnormal results of liver function studies R94.6 - Abnormal results of thyroid function studies R94.7 - Abnormal results of other endocrine function studies R94.8 - Abnormal results of function studies of other organs and systems

About ICD-10-CM Code R94 (Abnormal results of function studies)

ICD-10-CM code R94 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM R94 became effective on October 1, 2024.

This page provides detailed information about R94 - Abnormal results of function studies. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Abnormal results of function studies.