D9046ZZBeam Radiation of Mouth using Neutron Capture
- Billable / Specific Code
D9046ZZ is a billable ICD-10-PCS procedure code for Beam Radiation of Mouth using Neutron Capture. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Beam radiation.
Code Identity
PCS Table Breakdown
Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.
| Position | Designation | Value | Meaning |
|---|---|---|---|
| 1 | Section | D | Radiation Therapy |
| 2 | Body System | 9 | Ear, Nose, Mouth and Throat |
| 3 | Modality | 0 | Beam Radiation |
| 4 | TreatmentSite | 4 | Mouth |
| 5 | ModalityQualifier | 6 | Neutron Capture |
| 6 | Isotope | Z | None |
| 7 | Qualifier | Z | None |
In the ICD-10-PCS Alphabetic Index
These FY 2026 ICD-10-PCS Alphabetic Index entries lead to this code:
To code beam radiation of the mouth, open the FY 2026 ICD-10-PCS Alphabetic Index at Beam Radiation, then the subterm Mouth. The index leads to table D90, where the modality qualifier, isotope and qualifier values shown in the breakdown above complete the seven-character code D9046ZZ.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Similar Procedure Codes
Questions About D9046ZZ
Is D9046ZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Beam Radiation of Mouth using Neutron Capture on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in D9046ZZ mean?
The code breaks down character by character: the 1st character D is the Section (Radiation Therapy); the 2nd character 9 is the Body System (Ear, Nose, Mouth and Throat); the 3rd character 0 is the Modality (Beam Radiation); the 4th character 4 is the TreatmentSite (Mouth); the 5th character 6 is the ModalityQualifier (Neutron Capture); the 6th character Z is the Isotope (None); the 7th character Z is the Qualifier (None).
What is the ICD-9-PCS equivalent of D9046ZZ?
Under the General Equivalence Mappings, Beam Radiation of Mouth using Neutron Capture crosswalks to ICD-9-PCS 92.26 (Teleradiotherapy of other particulate radiation). The mapping is approximate, so confirm it fits the documentation.
