794 Nonspecific abnormal results of function studies (794.00-794.9) ICD-9-CM
The 794.00-794.9 block classified 794 nonspecific abnormal results of function studies with 23 legacy diagnosis codes. None remain valid for claim submission; each code below links to its reference page with the official ICD-10-CM replacement under the CMS General Equivalence Mappings.
Retired Code Set
ICD-9-CM stopped being valid for U.S. claims with dates of service on or after October 1, 2015, when ICD-10-CM replaced it. Use this index for historical lookups and crosswalking; for current coding, start from the ICD-10-CM codes list or the ICD-9 / ICD-10 converter.
Legacy Codes in the 794.00-794.9 Block 23 codes
None of these codes remain valid for claim submission. Each code page shows its ICD-10-CM replacement under the CMS General Equivalence Mappings.
- 794.00 Abn cns funct study NOS
- 794.01 Abnorm echoencephalogram
- 794.02 Abn electroencephalogram
- 794.09 Abn cns funct study NEC
- 794.10 Abn stimul response NOS
- 794.11 Abn retinal funct study
- 794.12 Abnorm electro-oculogram
- 794.13 Abnormal vep
- 794.14 Abn oculomotor studies
- 794.15 Abn auditory funct study
- 794.16 Abn vestibular func stud
- 794.17 Abnorm electromyogram
- 794.19 Abn periph nerv stud NEC
- 794.2 Abn pulmonary func study
- 794.30 Abn cardiovasc study NOS
- 794.31 Abnorm electrocardiogram
- 794.39 Abn cardiovasc study NEC
- 794.4 Abn kidney funct study
- 794.5 Abn thyroid funct study
- 794.6 Abn endocrine study NEC
- 794.7 Abn basal metabol study
- 794.8 Abn liver function study
- 794.9 Abn function study NEC
Questions About This Page
Are the 794.00-794.9 codes still billable?
No. Every code in this block became invalid for U.S. claims after September 30, 2015. Each code page linked above shows the ICD-10-CM replacement CMS assigned in the General Equivalence Mappings, and the ICD-9 / ICD-10 converter translates any of them directly.
What did the 794.00-794.9 block classify?
The block classified 794 nonspecific abnormal results of function studies with 23 codes in the final ICD-9-CM release. It sat under Symptoms, signs, and ill-defined conditions (780–799) in the legacy hierarchy.
Related References
Source: final CMS ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.
