2026 ICD-10-CM Diagnosis Code D49.511Neoplasm of unspecified behavior of right kidney
ICD-10-CM Codes›D50–D89›D49›D49
- Billable — Valid for Submission
- Not Chronic
D49.511 is a billable ICD-10-CM diagnosis code for neoplasm of unspecified behavior of right kidney. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 656 through 658, 686 through 688. Coders also document this condition as bilateral neoplasm of kidneys. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neoplasms of unspecified nature or uncertain behavior.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Bilateral neoplasm of kidneys
- Neoplasm of right kidney
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
| Site | Malig. Primary | Malig. Secondary | Ca in situ | Benign | Uncertain | Unspec. |
|---|---|---|---|---|---|---|
| calyx, renal | C65. | C79.0 | D09.19 | D30.1 | D41.1 | D49.51 |
| kidney (parenchymal) | C64. | C79.0 | D09.19 | D30.0 | D41.0 | D49.51 |
| kidney (parenchymal) › calyx | C65. | C79.0 | D09.19 | D30.1 | D41.1 | D49.51 |
| kidney (parenchymal) › hilus | C65. | C79.0 | D09.19 | D30.1 | D41.1 | D49.51 |
| kidney (parenchymal) › pelvis | C65. | C79.0 | D09.19 | D30.1 | D41.1 | D49.51 |
| parenchyma, kidney | C64. | C79.0 | D09.19 | D30.0 | D41.0 | D49.51 |
| pelvis, pelvic › renal | C65. | C79.0 | D09.19 | D30.1 | D41.1 | D49.51 |
| renal | C64. | C79.0 | D09.19 | D30.0 | D41.0 | D49.51 |
| renal › calyx | C65. | C79.0 | D09.19 | D30.1 | D41.1 | D49.51 |
| renal › hilus | C65. | C79.0 | D09.19 | D30.1 | D41.1 | D49.51 |
| renal › parenchyma | C64. | C79.0 | D09.19 | D30.0 | D41.0 | D49.51 |
| renal › pelvis | C65. | C79.0 | D09.19 | D30.1 | D41.1 | D49.51 |
Convert D49.511 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code History & ChangesHistory
Replacement D49.511 replaces the following previously assigned code(s):
- D49.5 - Neoplasm of unsp behavior of other genitourinary organs
Questions About D49.511Overview
Is D49.511 (Neoplasm of unspecified behavior of kidney) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report neoplasm of unspecified behavior of right kidney on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does D49.511 group to?
When neoplasm of unspecified behavior of right kidney is the principal diagnosis on an inpatient stay, it groups to MS-DRG 656, 657, 658, 686, 687, 688, with relative weights from 0.7903 to 3.1838 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of D49.511?
Under the General Equivalence Mappings, neoplasm of unspecified behavior of right kidney converts to ICD-9-CM 239.5 (other gu neoplasm NOS). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
