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ICD-10-CM 2027 diagnosis code

D41.22Neoplasm of uncertain behavior of left ureter

✓ Billable / specific

D41.22 is a valid, billable ICD-10-CM code for neoplasm of uncertain behavior of left ureter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

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

About D41.22

D41.22 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of left ureter. It belongs to category D41 (neoplasm of uncertain behavior of urinary organs), block D37-D48 (neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes) and chapter 2 (neoplasms). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within D41.2 (neoplasm of uncertain behavior of ureter), D41.22 is specifically for neoplasm of uncertain behavior of left ureter. Related codes cover unspecified ureter (D41.20) and right ureter (D41.21).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 656 (Kidney and Ureter Procedures for Neoplasm with MCC, relative weight 3.2786), DRG 657 (Kidney and Ureter Procedures for Neoplasm with CC, relative weight 1.8365), DRG 658 (Kidney and Ureter Procedures for Neoplasm without CC/MCC, relative weight 1.538), DRG 686 (Kidney and Urinary Tract Neoplasms with MCC, relative weight 1.7237), DRG 687 (Kidney and Urinary Tract Neoplasms with CC, relative weight 0.9957) and DRG 688 (Kidney and Urinary Tract Neoplasms without CC/MCC, relative weight 0.7333), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 236.91 (neoplasm of uncertain behavior of kidney and ureter).

Notes that apply from higher levels

Instructions written at a parent level also apply to D41.22.

Broader instructions also apply from D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes and Chapter 2: Neoplasms.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 236.91Neoplasm of uncertain behavior of kidney and ureterapproximate

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 D41.22

Is D41.22 billable?

Yes. D41.22 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can D41.22 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict D41.22 as a principal diagnosis.

Is D41.22 a CC or MCC?

No. D41.22 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does D41.22 group to?

D41.22 is used in the MS-DRG v44.0 logic for MS-DRG 656 (Kidney and Ureter Procedures for Neoplasm with MCC), MS-DRG 657 (Kidney and Ureter Procedures for Neoplasm with CC), MS-DRG 658 (Kidney and Ureter Procedures for Neoplasm without CC/MCC), MS-DRG 686 (Kidney and Urinary Tract Neoplasms with MCC), MS-DRG 687 (Kidney and Urinary Tract Neoplasms with CC) and MS-DRG 688 (Kidney and Urinary Tract Neoplasms without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for D41.22?

The CMS General Equivalence Mappings map D41.22 to ICD-9-CM 236.91.