D9YDFZZPlaque Radiation of Nasopharynx
- Billable / Specific Code
D9YDFZZ is a billable ICD-10-PCS procedure code for Plaque Radiation of Nasopharynx. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Radiation therapy, NEC.
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 | Y | Other Radiation |
| 4 | TreatmentSite | D | Nasopharynx |
| 5 | ModalityQualifier | F | Plaque Radiation |
| 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 plaque radiation of the nasopharynx, open the FY 2027 ICD-10-PCS Alphabetic Index at Plaque Radiation, then the subterm Nasopharynx. The entry lists D9YDFZZ directly as a complete, billable code.
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 D9YDFZZ
Is D9YDFZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Plaque Radiation of Nasopharynx on inpatient claims from October 1, 2026 through September 30, 2027.
What is the ICD-10-PCS code for plaque radiation of the nasopharynx?
The FY 2027 ICD-10-PCS Alphabetic Index entry Plaque Radiation, Nasopharynx is a direct entry for D9YDFZZ, Plaque Radiation of Nasopharynx, billable on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in D9YDFZZ 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 Y is the Modality (Other Radiation); the 4th character D is the TreatmentSite (Nasopharynx); the 5th character F is the ModalityQualifier (Plaque Radiation); the 6th character Z is the Isotope (None); the 7th character Z is the Qualifier (None).
What is the ICD-9-PCS equivalent of D9YDFZZ?
Under the General Equivalence Mappings, Plaque Radiation of Nasopharynx crosswalks to ICD-9-PCS 92.29 (Other radiotherapeutic procedure). The mapping is approximate, so confirm it fits the documentation.
