ICD-9-CM procedure code (retired)
04.12 — Open biopsy of cranial or peripheral nerve or ganglion
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-PCS equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 04.12
04.12 is an ICD-9-CM procedure code for open biopsy of cranial or peripheral nerve or ganglion. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-PCS took over.
The CMS General Equivalence Mappings translate it to 60 ICD-10-PCS codes, such as 009F0ZX (Drainage of Olfactory Nerve, Open Approach, Diagnostic), 009G0ZX (Drainage of Optic Nerve, Open Approach, Diagnostic) and 009H0ZX (Drainage of Oculomotor Nerve, Open Approach, Diagnostic). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 009F0ZXDrainage of Olfactory Nerve, Open Approach, Diagnosticapproximate
- 009G0ZXDrainage of Optic Nerve, Open Approach, Diagnosticapproximate
- 009H0ZXDrainage of Oculomotor Nerve, Open Approach, Diagnosticapproximate
- 009J0ZXDrainage of Trochlear Nerve, Open Approach, Diagnosticapproximate
- 009K0ZXDrainage of Trigeminal Nerve, Open Approach, Diagnosticapproximate
- 009L0ZXDrainage of Abducens Nerve, Open Approach, Diagnosticapproximate
- 009M0ZXDrainage of Facial Nerve, Open Approach, Diagnosticapproximate
- 009N0ZXDrainage of Acoustic Nerve, Open Approach, Diagnosticapproximate
- 009P0ZXDrainage of Glossopharyngeal Nerve, Open Approach, Diagnosticapproximate
- 009Q0ZXDrainage of Vagus Nerve, Open Approach, Diagnosticapproximate
- 009R0ZXDrainage of Accessory Nerve, Open Approach, Diagnosticapproximate
- 009S0ZXDrainage of Hypoglossal Nerve, Open Approach, Diagnosticapproximate
- 00BF0ZXExcision of Olfactory Nerve, Open Approach, Diagnosticapproximate
- 00BG0ZXExcision of Optic Nerve, Open Approach, Diagnosticapproximate
- 00BH0ZXExcision of Oculomotor Nerve, Open Approach, Diagnosticapproximate
- 00BJ0ZXExcision of Trochlear Nerve, Open Approach, Diagnosticapproximate
- 00BK0ZXExcision of Trigeminal Nerve, Open Approach, Diagnosticapproximate
- 00BL0ZXExcision of Abducens Nerve, Open Approach, Diagnosticapproximate
- 00BM0ZXExcision of Facial Nerve, Open Approach, Diagnosticapproximate
- 00BN0ZXExcision of Acoustic Nerve, Open Approach, Diagnosticapproximate
- 00BP0ZXExcision of Glossopharyngeal Nerve, Open Approach, Diagnosticapproximate
- 00BQ0ZXExcision of Vagus Nerve, Open Approach, Diagnosticapproximate
- 00BR0ZXExcision of Accessory Nerve, Open Approach, Diagnosticapproximate
- 00BS0ZXExcision of Hypoglossal Nerve, Open Approach, Diagnosticapproximate
- 01900ZXDrainage of Cervical Plexus, Open Approach, Diagnosticapproximate
- 01910ZXDrainage of Cervical Nerve, Open Approach, Diagnosticapproximate
- 01920ZXDrainage of Phrenic Nerve, Open Approach, Diagnosticapproximate
- 01930ZXDrainage of Brachial Plexus, Open Approach, Diagnosticapproximate
- 01940ZXDrainage of Ulnar Nerve, Open Approach, Diagnosticapproximate
- 01950ZXDrainage of Median Nerve, Open Approach, Diagnosticapproximate
- 01960ZXDrainage of Radial Nerve, Open Approach, Diagnosticapproximate
- 01980ZXDrainage of Thoracic Nerve, Open Approach, Diagnosticapproximate
- 01990ZXDrainage of Lumbar Plexus, Open Approach, Diagnosticapproximate
- 019A0ZXDrainage of Lumbosacral Plexus, Open Approach, Diagnosticapproximate
- 019B0ZXDrainage of Lumbar Nerve, Open Approach, Diagnosticapproximate
- 019C0ZXDrainage of Pudendal Nerve, Open Approach, Diagnosticapproximate
- 019D0ZXDrainage of Femoral Nerve, Open Approach, Diagnosticapproximate
- 019F0ZXDrainage of Sciatic Nerve, Open Approach, Diagnosticapproximate
- 019G0ZXDrainage of Tibial Nerve, Open Approach, Diagnosticapproximate
- 019H0ZXDrainage of Peroneal Nerve, Open Approach, Diagnosticapproximate
- 019Q0ZXDrainage of Sacral Plexus, Open Approach, Diagnosticapproximate
- 019R0ZXDrainage of Sacral Nerve, Open Approach, Diagnosticapproximate
- 01B00ZXExcision of Cervical Plexus, Open Approach, Diagnosticapproximate
- 01B10ZXExcision of Cervical Nerve, Open Approach, Diagnosticapproximate
- 01B20ZXExcision of Phrenic Nerve, Open Approach, Diagnosticapproximate
- 01B30ZXExcision of Brachial Plexus, Open Approach, Diagnosticapproximate
- 01B40ZXExcision of Ulnar Nerve, Open Approach, Diagnosticapproximate
- 01B50ZXExcision of Median Nerve, Open Approach, Diagnosticapproximate
- 01B60ZXExcision of Radial Nerve, Open Approach, Diagnosticapproximate
- 01B80ZXExcision of Thoracic Nerve, Open Approach, Diagnosticapproximate
- 01B90ZXExcision of Lumbar Plexus, Open Approach, Diagnosticapproximate
- 01BA0ZXExcision of Lumbosacral Plexus, Open Approach, Diagnosticapproximate
- 01BB0ZXExcision of Lumbar Nerve, Open Approach, Diagnosticapproximate
- 01BC0ZXExcision of Pudendal Nerve, Open Approach, Diagnosticapproximate
- 01BD0ZXExcision of Femoral Nerve, Open Approach, Diagnosticapproximate
- 01BF0ZXExcision of Sciatic Nerve, Open Approach, Diagnosticapproximate
- 01BG0ZXExcision of Tibial Nerve, Open Approach, Diagnosticapproximate
- 01BH0ZXExcision of Peroneal Nerve, Open Approach, Diagnosticapproximate
- 01BQ0ZXExcision of Sacral Plexus, Open Approach, Diagnosticapproximate
- 01BR0ZXExcision of Sacral Nerve, Open Approach, Diagnosticapproximate
Common questions about 04.12
What is the ICD-10 code for ICD-9 04.12?
- The GEMs map 04.12 to ICD-10-PCS 009F0ZX, 009G0ZX, 009H0ZX, 009J0ZX, 009K0ZX, 009L0ZX and 54 more.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.