D9Y77ZZContact Radiation of Sinuses
- Billable / Specific Code
D9Y77ZZ is a billable ICD-10-PCS procedure code for Contact Radiation of Sinuses. 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 | 7 | Sinuses |
| 5 | ModalityQualifier | 7 | Contact 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 contact radiation of the sinuses, open the FY 2027 ICD-10-PCS Alphabetic Index at Contact Radiation, then the subterm Sinuses. The entry lists D9Y77ZZ 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 D9Y77ZZ
Is D9Y77ZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Contact Radiation of Sinuses on inpatient claims from October 1, 2026 through September 30, 2027.
What is the ICD-10-PCS code for contact radiation of the sinuses?
The FY 2027 ICD-10-PCS Alphabetic Index entry Contact Radiation, Sinuses is a direct entry for D9Y77ZZ, Contact Radiation of Sinuses, billable on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in D9Y77ZZ 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 7 is the TreatmentSite (Sinuses); the 5th character 7 is the ModalityQualifier (Contact 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 D9Y77ZZ?
Under the General Equivalence Mappings, Contact Radiation of Sinuses crosswalks to ICD-9-PCS 92.21 (Superficial radiation). The mapping is approximate, so confirm it fits the documentation.
