0NN Release - Head and Facial Bones ICD-10-PCS
The 0NN code range contains 67 ICD-10-PCS codes for Release procedures on the head and facial bones. 66 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 0NN Range 67 codes · 66 billable
- 0NN Head and Facial Bones, ReleaseNon-billable header
- 0NN10ZZ Release Frontal Bone, Open Approach
- 0NN13ZZ Release Frontal Bone, Percutaneous Approach
- 0NN14ZZ Release Frontal Bone, Percutaneous Endoscopic Approach
- 0NN30ZZ Release Right Parietal Bone, Open Approach
- 0NN33ZZ Release Right Parietal Bone, Percutaneous Approach
- 0NN34ZZ Release Right Parietal Bone, Percutaneous Endoscopic Approach
- 0NN40ZZ Release Left Parietal Bone, Open Approach
- 0NN43ZZ Release Left Parietal Bone, Percutaneous Approach
- 0NN44ZZ Release Left Parietal Bone, Percutaneous Endoscopic Approach
- 0NN50ZZ Release Right Temporal Bone, Open Approach
- 0NN53ZZ Release Right Temporal Bone, Percutaneous Approach
- 0NN54ZZ Release Right Temporal Bone, Percutaneous Endoscopic Approach
- 0NN60ZZ Release Left Temporal Bone, Open Approach
- 0NN63ZZ Release Left Temporal Bone, Percutaneous Approach
- 0NN64ZZ Release Left Temporal Bone, Percutaneous Endoscopic Approach
- 0NN70ZZ Release Occipital Bone, Open Approach
- 0NN73ZZ Release Occipital Bone, Percutaneous Approach
- 0NN74ZZ Release Occipital Bone, Percutaneous Endoscopic Approach
- 0NNB0ZZ Release Nasal Bone, Open Approach
- 0NNB3ZZ Release Nasal Bone, Percutaneous Approach
- 0NNB4ZZ Release Nasal Bone, Percutaneous Endoscopic Approach
- 0NNC0ZZ Release Sphenoid Bone, Open Approach
- 0NNC3ZZ Release Sphenoid Bone, Percutaneous Approach
- 0NNC4ZZ Release Sphenoid Bone, Percutaneous Endoscopic Approach
- 0NNF0ZZ Release Right Ethmoid Bone, Open Approach
- 0NNF3ZZ Release Right Ethmoid Bone, Percutaneous Approach
- 0NNF4ZZ Release Right Ethmoid Bone, Percutaneous Endoscopic Approach
- 0NNG0ZZ Release Left Ethmoid Bone, Open Approach
- 0NNG3ZZ Release Left Ethmoid Bone, Percutaneous Approach
- 0NNG4ZZ Release Left Ethmoid Bone, Percutaneous Endoscopic Approach
- 0NNH0ZZ Release Right Lacrimal Bone, Open Approach
- 0NNH3ZZ Release Right Lacrimal Bone, Percutaneous Approach
- 0NNH4ZZ Release Right Lacrimal Bone, Percutaneous Endoscopic Approach
- 0NNJ0ZZ Release Left Lacrimal Bone, Open Approach
- 0NNJ3ZZ Release Left Lacrimal Bone, Percutaneous Approach
- 0NNJ4ZZ Release Left Lacrimal Bone, Percutaneous Endoscopic Approach
- 0NNK0ZZ Release Right Palatine Bone, Open Approach
- 0NNK3ZZ Release Right Palatine Bone, Percutaneous Approach
- 0NNK4ZZ Release Right Palatine Bone, Percutaneous Endoscopic Approach
- 0NNL0ZZ Release Left Palatine Bone, Open Approach
- 0NNL3ZZ Release Left Palatine Bone, Percutaneous Approach
- 0NNL4ZZ Release Left Palatine Bone, Percutaneous Endoscopic Approach
- 0NNM0ZZ Release Right Zygomatic Bone, Open Approach
- 0NNM3ZZ Release Right Zygomatic Bone, Percutaneous Approach
- 0NNM4ZZ Release Right Zygomatic Bone, Percutaneous Endoscopic Approach
- 0NNN0ZZ Release Left Zygomatic Bone, Open Approach
- 0NNN3ZZ Release Left Zygomatic Bone, Percutaneous Approach
- 0NNN4ZZ Release Left Zygomatic Bone, Percutaneous Endoscopic Approach
- 0NNP0ZZ Release Right Orbit, Open Approach
- 0NNP3ZZ Release Right Orbit, Percutaneous Approach
- 0NNP4ZZ Release Right Orbit, Percutaneous Endoscopic Approach
- 0NNQ0ZZ Release Left Orbit, Open Approach
- 0NNQ3ZZ Release Left Orbit, Percutaneous Approach
- 0NNQ4ZZ Release Left Orbit, Percutaneous Endoscopic Approach
- 0NNR0ZZ Release Maxilla, Open Approach
- 0NNR3ZZ Release Maxilla, Percutaneous Approach
- 0NNR4ZZ Release Maxilla, Percutaneous Endoscopic Approach
- 0NNT0ZZ Release Right Mandible, Open Approach
- 0NNT3ZZ Release Right Mandible, Percutaneous Approach
- 0NNT4ZZ Release Right Mandible, Percutaneous Endoscopic Approach
- 0NNV0ZZ Release Left Mandible, Open Approach
- 0NNV3ZZ Release Left Mandible, Percutaneous Approach
- 0NNV4ZZ Release Left Mandible, Percutaneous Endoscopic Approach
- 0NNX0ZZ Release Hyoid Bone, Open Approach
- 0NNX3ZZ Release Hyoid Bone, Percutaneous Approach
- 0NNX4ZZ Release Hyoid Bone, Percutaneous Endoscopic Approach
About the 0NN Code Range
The ICD-10-PCS root operation Release (code series 0NN) refers to freeing a body part from abnormal constraint by cutting or otherwise disrupting the structure that is impeding its normal function. This operation is performed without taking out the body part.
Within the Medical and Surgical section, Release operations for the Head and Facial Bones involve procedures that relieve restrictions related to bones such as the Frontal Bone (codes 0NN10ZZ, open approach; 0NN13ZZ, percutaneous; 0NN14ZZ, percutaneous endoscopic), Parietal Bones, Temporal Bones, and other facial bones including the Nasal, Maxilla, and Mandible. These procedures are carried out via various approaches, demonstrating the flexibility of the classification to document techniques ranging from traditional open surgery to minimally invasive methods. Accurate coding of these head and facial bone release procedures ensures precise clinical documentation of interventions aimed at restoring normal bone mobility and function.
Questions About This Page
How many billable codes are in the 0NN range?
Of the 67 codes in this range, 66 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 0NN 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 head and facial bones. 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.
