R94.1

Abnormal results of function studies of peripheral nervous system and special senses

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027

SourceCMS ICD-10-CM order file

ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODE	DESCRIPTION	TYPE
R94.11	Abnormal results of function studies of eye	Category
R94.110	Abnormal electro-oculogram [EOG]	Billable
R94.111	Abnormal electroretinogram [ERG]	Billable
R94.112	Abnormal visually evoked potential [VEP]	Billable
R94.113	Abnormal oculomotor study	Billable
R94.118	Abnormal results of other function studies of eye	Billable
R94.12	Abnormal results of function studies of ear and other special senses	Category
R94.120	Abnormal auditory function study	Billable
R94.121	Abnormal vestibular function study	Billable
R94.128	Abnormal results of other function studies of ear and other special senses	Billable
R94.13	Abnormal results of function studies of peripheral nervous system	Category
R94.130	Abnormal response to nerve stimulation, unspecified	Billable
R94.131	Abnormal electromyogram [EMG]	Billable
R94.138	Abnormal results of other function studies of peripheral nervous system	Billable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.