Skip to content
Dx

ICD-10-PCS 2027 procedure code

D021HZZStereotactic Particulate Radiosurgery of Brain Stem

✓ Valid for 2027Non-O.R. procedure

Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About D021HZZ

D021HZZ is the ICD-10-PCS code for a stereotactic radiosurgery procedure on the brain stem using a stereotactic particulate radiosurgery approach with none (qualifier: none).

In plain terms, this corresponds to particulate radiosurgery, the ICD-9-CM procedure title it maps to (92.33).

For a different body part, codes include D020HZZ (brain), D026HZZ (spinal cord) and D027HZZ (peripheral nerve).

The same procedure with a different approach is coded D021DZZ (stereotactic other photon radiosurgery) and D021JZZ (stereotactic gamma beam radiosurgery).

It is a non-O.R. procedure that is part of the MS-DRG logic for DRG 040 (Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC), DRG 041 (Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator), DRG 042 (Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC), DRG 628 (Other Endocrine, Nutritional and Metabolic O.R. Procedures with MCC or Insertion of Antibiotic-eluting Bone Void Filler), DRG 629 (Other Endocrine, Nutritional and Metabolic O.R. Procedures with CC) and DRG 630 (Other Endocrine, Nutritional and Metabolic O.R. Procedures without CC/MCC), under the surgical categories “Peripheral, Cranial Nerve and Other Nervous System Procedures”, “Other Endocrine, Nutritional and Metabolic O.R. Procedures”, “Lymphoma and Non-Acute Leukemia with Other Procedures” and 2 more.

It has been valid since ICD-10-PCS took effect on October 1, 2015.

What each character means

1. Section
DRadiation Therapy
2. Body System
0Central and Peripheral Nervous System
3. Modality
2Stereotactic Radiosurgery
4. Treatment Site
1Brain Stem
5. Modality Qualifier
HStereotactic Particulate Radiosurgery
6. Isotope
ZNone
7. Qualifier
ZNone

Other versions of this procedure

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

MDC 17 · Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms · Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Other Procedures

MDC 17 · Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms · Acute Leukemia with Other Procedures

ICD-9-CM equivalent

Converter →
  • 92.33Particulate radiosurgeryapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about D021HZZ

Is D021HZZ a valid ICD-10-PCS code for 2027?

Yes. D021HZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is D021HZZ an O.R. procedure?

No. D021HZZ is designated non-O.R. in MS-DRG v44.0.

What DRG does D021HZZ group to?

Depending on the principal diagnosis, D021HZZ can group to MS-DRG 040, MS-DRG 041, MS-DRG 042, MS-DRG 628, MS-DRG 629 and MS-DRG 630.

What is the ICD-9 procedure code for D021HZZ?

The CMS GEMs map D021HZZ to ICD-9-CM 92.33 (Particulate radiosurgery).