DW21DZZStereotactic Other Photon Radiosurgery of Head and Neck
- Billable / Specific Code
DW21DZZ is a billable ICD-10-PCS procedure code for Stereotactic Other Photon Radiosurgery of Head and Neck. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to 12 MS-DRGs. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Stereotactic radiosurgery.
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 | W | Anatomical Regions |
| 3 | Modality | 2 | Stereotactic Radiosurgery |
| 4 | TreatmentSite | 1 | Head and Neck |
| 5 | ModalityQualifier | D | Stereotactic Other Photon Radiosurgery |
| 6 | Isotope | Z | None |
| 7 | Qualifier | Z | None |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
To code stereotactic radiosurgery of the head and neck, open the FY 2027 ICD-10-PCS Alphabetic Index at Stereotactic Radiosurgery, then the subterm Head and Neck. The index leads to table DW2, where the modality qualifier, isotope and qualifier values shown in the breakdown above complete the seven-character code DW21DZZ.
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 DW21DZZ
Is DW21DZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Stereotactic Other Photon Radiosurgery of Head and Neck on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in DW21DZZ mean?
The code breaks down character by character: the 1st character D is the Section (Radiation Therapy); the 2nd character W is the Body System (Anatomical Regions); the 3rd character 2 is the Modality (Stereotactic Radiosurgery); the 4th character 1 is the TreatmentSite (Head and Neck); the 5th character D is the ModalityQualifier (Stereotactic Other Photon Radiosurgery); the 6th character Z is the Isotope (None); the 7th character Z is the Qualifier (None).
What MS-DRG does DW21DZZ group to?
On an inpatient stay, Stereotactic Other Photon Radiosurgery of Head and Neck maps to MS-DRGs 040, 041, 042, 628, 629, 630, 823, 824, 825, 829, 830, 850, with relative weights from 1.2990 to 8.4076. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of DW21DZZ?
Under the General Equivalence Mappings, Stereotactic Other Photon Radiosurgery of Head and Neck crosswalks to ICD-9-PCS 92.31 (Single source photon radiosurgery) and 92.39 (Stereotactic radiosurgery, not elsewhere classified). The mapping is approximate, so confirm it fits the documentation.
