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ICD-10-CM 2027 diagnosis code

N17.2Acute kidney failure with medullary necrosis

✓ Billable / specificMCC — major complication/comorbidity

N17.2 is a valid, billable ICD-10-CM code for acute kidney failure with medullary necrosis. 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 N17.2

N17.2 is the ICD-10-CM diagnosis code for acute kidney failure with medullary necrosis. It belongs to category N17 (acute kidney failure), block N17-N19 (acute kidney failure and chronic kidney disease) and chapter 14 (diseases of the genitourinary system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within N17 (acute kidney failure), N17.2 is specifically for acute kidney failure with medullary necrosis. Related codes cover with tubular necrosis (N17.0), with acute cortical necrosis (N17.1), other acute kidney failure (N17.8) and unspecified (N17.9).

As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 673 (Other Kidney and Urinary Tract Procedures with MCC, relative weight 4.2525), DRG 674 (Other Kidney and Urinary Tract Procedures with CC, relative weight 2.2504), DRG 675 (Other Kidney and Urinary Tract Procedures without CC/MCC, relative weight 1.5887), DRG 682 (Renal Failure with MCC, relative weight 1.4656), DRG 683 (Renal Failure with CC, relative weight 0.8647), DRG 684 (Renal Failure without CC/MCC, relative weight 0.6003) and 2 more, in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), 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 583.7 (nephritis and nephropathy, not specified as acute or chronic, with lesion of renal medullary necrosis) and 584.7 (acute kidney failure with lesion of renal medullary [papillary] necrosis).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Medullary [papillary] necrosis NOS
  • Acute medullary [papillary] necrosis
  • Renal medullary [papillary] necrosis

Notes that apply from higher levels

Instructions written at a parent level also apply to N17.2.

› From N17 Acute kidney failure
Excludes1
  • posttraumatic renal failure (T79.5)
Code also
  • associated underlying condition

Broader instructions also apply from N17-N19 Acute kidney failure and chronic kidney disease and Chapter 14: Diseases of the genitourinary system.

Alphabetic index entries

9 entries

Terms in the official ICD-10-CM index that lead to N17.2.

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.

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

ICD-9-CM equivalent

Converter →
  • 583.7Nephritis and nephropathy, not specified as acute or chronic, with lesion of renal medullary necrosisapproximate
  • 584.7Acute kidney failure with lesion of renal medullary [papillary] necrosisapproximate

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 N17.2

Is N17.2 billable?

Yes. N17.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can N17.2 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict N17.2 as a principal diagnosis.

Is N17.2 a CC or MCC?

N17.2 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does N17.2 group to?

N17.2 is used in the MS-DRG v44.0 logic for MS-DRG 673 (Other Kidney and Urinary Tract Procedures with MCC), MS-DRG 674 (Other Kidney and Urinary Tract Procedures with CC), MS-DRG 675 (Other Kidney and Urinary Tract Procedures without CC/MCC), MS-DRG 682 (Renal Failure with MCC), MS-DRG 683 (Renal Failure with CC), MS-DRG 684 (Renal Failure without CC/MCC) and 2 more. 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 N17.2?

The CMS General Equivalence Mappings map N17.2 to ICD-9-CM 583.7 and 584.7.