00N Release - Central Nervous System and Cranial Nerves ICD-10-PCS
The 00N code range contains 82 ICD-10-PCS codes for Release procedures on the central nervous system and cranial nerves. 81 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Release: Freeing a body part from an abnormal physical constraint by cutting or by use of force.
Codes in the 00N Range 82 codes · 81 billable
- 00N Central Nervous System and Cranial Nerves, ReleaseNon-billable header
- 00N00ZZ Release Brain, Open Approach
- 00N03ZZ Release Brain, Percutaneous Approach
- 00N04ZZ Release Brain, Percutaneous Endoscopic Approach
- 00N10ZZ Release Cerebral Meninges, Open Approach
- 00N13ZZ Release Cerebral Meninges, Percutaneous Approach
- 00N14ZZ Release Cerebral Meninges, Percutaneous Endoscopic Approach
- 00N20ZZ Release Dura Mater, Open Approach
- 00N23ZZ Release Dura Mater, Percutaneous Approach
- 00N24ZZ Release Dura Mater, Percutaneous Endoscopic Approach
- 00N60ZZ Release Cerebral Ventricle, Open Approach
- 00N63ZZ Release Cerebral Ventricle, Percutaneous Approach
- 00N64ZZ Release Cerebral Ventricle, Percutaneous Endoscopic Approach
- 00N70ZZ Release Cerebral Hemisphere, Open Approach
- 00N73ZZ Release Cerebral Hemisphere, Percutaneous Approach
- 00N74ZZ Release Cerebral Hemisphere, Percutaneous Endoscopic Approach
- 00N80ZZ Release Basal Ganglia, Open Approach
- 00N83ZZ Release Basal Ganglia, Percutaneous Approach
- 00N84ZZ Release Basal Ganglia, Percutaneous Endoscopic Approach
- 00N90ZZ Release Thalamus, Open Approach
- 00N93ZZ Release Thalamus, Percutaneous Approach
- 00N94ZZ Release Thalamus, Percutaneous Endoscopic Approach
- 00NA0ZZ Release Hypothalamus, Open Approach
- 00NA3ZZ Release Hypothalamus, Percutaneous Approach
- 00NA4ZZ Release Hypothalamus, Percutaneous Endoscopic Approach
- 00NB0ZZ Release Pons, Open Approach
- 00NB3ZZ Release Pons, Percutaneous Approach
- 00NB4ZZ Release Pons, Percutaneous Endoscopic Approach
- 00NC0ZZ Release Cerebellum, Open Approach
- 00NC3ZZ Release Cerebellum, Percutaneous Approach
- 00NC4ZZ Release Cerebellum, Percutaneous Endoscopic Approach
- 00ND0ZZ Release Medulla Oblongata, Open Approach
- 00ND3ZZ Release Medulla Oblongata, Percutaneous Approach
- 00ND4ZZ Release Medulla Oblongata, Percutaneous Endoscopic Approach
- 00NF0ZZ Release Olfactory Nerve, Open Approach
- 00NF3ZZ Release Olfactory Nerve, Percutaneous Approach
- 00NF4ZZ Release Olfactory Nerve, Percutaneous Endoscopic Approach
- 00NG0ZZ Release Optic Nerve, Open Approach
- 00NG3ZZ Release Optic Nerve, Percutaneous Approach
- 00NG4ZZ Release Optic Nerve, Percutaneous Endoscopic Approach
- 00NH0ZZ Release Oculomotor Nerve, Open Approach
- 00NH3ZZ Release Oculomotor Nerve, Percutaneous Approach
- 00NH4ZZ Release Oculomotor Nerve, Percutaneous Endoscopic Approach
- 00NJ0ZZ Release Trochlear Nerve, Open Approach
- 00NJ3ZZ Release Trochlear Nerve, Percutaneous Approach
- 00NJ4ZZ Release Trochlear Nerve, Percutaneous Endoscopic Approach
- 00NK0ZZ Release Trigeminal Nerve, Open Approach
- 00NK3ZZ Release Trigeminal Nerve, Percutaneous Approach
- 00NK4ZZ Release Trigeminal Nerve, Percutaneous Endoscopic Approach
- 00NL0ZZ Release Abducens Nerve, Open Approach
- 00NL3ZZ Release Abducens Nerve, Percutaneous Approach
- 00NL4ZZ Release Abducens Nerve, Percutaneous Endoscopic Approach
- 00NM0ZZ Release Facial Nerve, Open Approach
- 00NM3ZZ Release Facial Nerve, Percutaneous Approach
- 00NM4ZZ Release Facial Nerve, Percutaneous Endoscopic Approach
- 00NN0ZZ Release Acoustic Nerve, Open Approach
- 00NN3ZZ Release Acoustic Nerve, Percutaneous Approach
- 00NN4ZZ Release Acoustic Nerve, Percutaneous Endoscopic Approach
- 00NP0ZZ Release Glossopharyngeal Nerve, Open Approach
- 00NP3ZZ Release Glossopharyngeal Nerve, Percutaneous Approach
- 00NP4ZZ Release Glossopharyngeal Nerve, Percutaneous Endoscopic Approach
- 00NQ0ZZ Release Vagus Nerve, Open Approach
- 00NQ3ZZ Release Vagus Nerve, Percutaneous Approach
- 00NQ4ZZ Release Vagus Nerve, Percutaneous Endoscopic Approach
- 00NR0ZZ Release Accessory Nerve, Open Approach
- 00NR3ZZ Release Accessory Nerve, Percutaneous Approach
- 00NR4ZZ Release Accessory Nerve, Percutaneous Endoscopic Approach
- 00NS0ZZ Release Hypoglossal Nerve, Open Approach
- 00NS3ZZ Release Hypoglossal Nerve, Percutaneous Approach
- 00NS4ZZ Release Hypoglossal Nerve, Percutaneous Endoscopic Approach
- 00NT0ZZ Release Spinal Meninges, Open Approach
- 00NT3ZZ Release Spinal Meninges, Percutaneous Approach
- 00NT4ZZ Release Spinal Meninges, Percutaneous Endoscopic Approach
- 00NW0ZZ Release Cervical Spinal Cord, Open Approach
- 00NW3ZZ Release Cervical Spinal Cord, Percutaneous Approach
- 00NW4ZZ Release Cervical Spinal Cord, Percutaneous Endoscopic Approach
- 00NX0ZZ Release Thoracic Spinal Cord, Open Approach
- 00NX3ZZ Release Thoracic Spinal Cord, Percutaneous Approach
- 00NX4ZZ Release Thoracic Spinal Cord, Percutaneous Endoscopic Approach
- 00NY0ZZ Release Lumbar Spinal Cord, Open Approach
- 00NY3ZZ Release Lumbar Spinal Cord, Percutaneous Approach
- 00NY4ZZ Release Lumbar Spinal Cord, Percutaneous Endoscopic Approach
About the 00N Code Range
The ICD-10-PCS root operation Release (Code 00N) refers to freeing a body part from abnormal constriction to improve function without removing any tissue. Within the Medical and Surgical section, this operation specifically targets structures of the Central Nervous System and Cranial Nerves.
This procedure involves releasing various nervous system components, such as the Brain, Cerebral Meninges, Dura Mater, and different cranial nerves like the Optic Nerve or Facial Nerve. It can be performed through multiple approaches: Open, Percutaneous, or Percutaneous Endoscopic. For example, 00N00ZZ codes an open release of the brain, while 00N63ZZ and 00N64ZZ represent percutaneous or percutaneous endoscopic release of the cerebral ventricle. These codes enable precise documentation of releasing constricted neural tissues to restore proper neurological function without excision, critical for accurately coding CNS and cranial nerve procedures.
Questions About This Page
How many billable codes are in the 00N range?
Of the 82 codes in this range, 81 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the 00N range classify?
The range classifies Release procedures, freeing a body part from an abnormal physical constraint by cutting or by use of force, performed on the central nervous system and cranial nerves. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
