D91DBB1Low Dose Rate (LDR) Brachytherapy of Nasopharynx using Palladium 103 (Pd-103), Unidirectional Source
- Billable / Specific Code
D91DBB1 is a billable ICD-10-PCS procedure code for Low Dose Rate (LDR) Brachytherapy of Nasopharynx using Palladium 103 (Pd-103), Unidirectional Source. 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 Brachytherapy.
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 | 1 | Brachytherapy |
| 4 | TreatmentSite | D | Nasopharynx |
| 5 | ModalityQualifier | B | Low Dose Rate (LDR) |
| 6 | Isotope | B | Palladium 103 (Pd-103) |
| 7 | Qualifier | 1 | Unidirectional Source |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
To code brachytherapy of the nasopharynx, open the FY 2027 ICD-10-PCS Alphabetic Index at Brachytherapy, then the subterm Nasopharynx. The index leads to table D91, where the modality qualifier, isotope and qualifier values shown in the breakdown above complete the seven-character code D91DBB1.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Code History
- D91DBBZ — LDR Brachytherapy of Nasopharynx using Pd-103
Similar Procedure Codes
Questions About D91DBB1
Is D91DBB1 a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Low Dose Rate (LDR) Brachytherapy of Nasopharynx using Palladium 103 (Pd-103), Unidirectional Source on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in D91DBB1 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 1 is the Modality (Brachytherapy); the 4th character D is the TreatmentSite (Nasopharynx); the 5th character B is the ModalityQualifier (Low Dose Rate (LDR)); the 6th character B is the Isotope (Palladium 103 (Pd-103)); the 7th character 1 is the Qualifier (Unidirectional Source).
