What is ICD-10 code N17.0?

N17.0 is the ICD-10-CM diagnosis code for Acute kidney failure with tubular necrosis. Sudden loss of kidney function accompanied by death of the tubular cells in the kidney. This is a severe, life-threatening condition requiring immediate medical intervention. N17.0 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. N17.0 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. N17.0 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. N17.0 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Which HCC does N17.0 map to under V28?

N17.0 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

What RAF reference is published for N17.0?

N17.0 has no V28 reference coefficient because the final FY2026 source verifies no payable V28 mapping.

What is the V28 vs V24 difference for N17.0?

N17.0 has verified no payable V28 mapping in the final FY2026 source. Select a historical effective period before making any V24 comparison.

What documentation supports N17.0?

Document the cause of acute kidney failure (sepsis, hypotension, nephrotoxic drugs, etc.) as this affects treatment and prognosis Monitor and document urine output, creatinine levels, and whether dialysis is required N17.0 is not a CMS-HCC V28 payment code in the verified current source, so MEAT is not the payment hook. Documentation still has to support the diagnosis if you report it.

Can N17.0 be a primary diagnosis?

Yes. N17.0 carries no code-first instruction in the FY2026 tabular, so it can be the first-listed diagnosis when it is the condition chiefly responsible for the encounter and the note supports it, and it can also be reported as a secondary diagnosis. For risk adjustment the order does not matter; the V28 category is the same either way.

Which codes cannot be reported with N17.0?

The Excludes1 note that applies to N17.0 lists posttraumatic renal failure (T79.5). An Excludes1 condition is not reported together with N17.0; report one or the other, unless the two conditions are unrelated, which the ICD-10-CM Official Guidelines (Section I.A.12.a) allow. The Excludes2 note lists certain conditions originating in the perinatal period (P04-P96); certain infectious and parasitic diseases (A00-B99); complications of pregnancy, childbirth and the puerperium (O00-O9A); congenital malformations, deformations and chromosomal abnormalities (Q00-Q99); and 15 more (see the notes on this page); those are separate conditions that may be reported together with N17.0 when both are documented.

2026 ICD-10-CM N17.0: Acute kidney failure with tubular

N17.0 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools

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Code lookupN17.0

Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Diseases of the genitourinary system (N00-N99) / Acute kidney failure and chronic kidney disease (N17-N19)

N17.0

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Acute kidney failure with tubular necrosis

Sudden loss of kidney function accompanied by death of the tubular cells in the kidney. This is a severe, life-threatening condition requiring immediate medical intervention.

Buddy Insight

Acute kidney failure with tubular necrosis represents a severe, life-threatening condition requiring immediate medical intervention and intensive monitoring.

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

Mapped

HCC 135

Acute Renal Failure

Code-level coefficient reference

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

N17Acute kidney failure N17.0Acute kidney failure with tubular necrosis

Inclusion Terms

Official

Acute tubular necrosis
Renal tubular necrosis
Tubular necrosis NOS

Excludes 2

Official

certain conditions originating in the perinatal period (P04-P96)Inherited from N00-N99, N17-N19
certain infectious and parasitic diseases (A00-B99)Inherited from N00-N99, N17-N19
complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from N00-N99, N17-N19
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Inherited from N00-N99, N17-N19
endocrine, nutritional and metabolic diseases (E00-E88)Inherited from N00-N99, N17-N19
injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from N00-N99, N17-N19
neoplasms (C00-D49)Inherited from N00-N99, N17-N19
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from N00-N99, N17-N19
congenital renal failure (P96.0)Inherited from N00-N99, N17-N19
drug- and heavy-metal-induced tubulo-interstitial and tubular conditions (N14.-)Inherited from N00-N99, N17-N19
extrarenal uremia (R39.2)Inherited from N00-N99, N17-N19
hemolytic-uremic syndrome (D59.3-)Inherited from N00-N99, N17-N19
hepatorenal syndrome (K76.7)Inherited from N00-N99, N17-N19
postpartum hepatorenal syndrome (O90.41)Inherited from N00-N99, N17-N19
posttraumatic renal failure (T79.5)Inherited from N00-N99, N17-N19
prerenal uremia (R39.2)Inherited from N00-N99, N17-N19
renal failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4)Inherited from N00-N99, N17-N19
renal failure following labor and delivery (O90.41)Inherited from N00-N99, N17-N19
renal failure postprocedural (N99.0)Inherited from N00-N99, N17-N19

Related Codes

Official

N17.1Acute kidney failure with acute cortical necrosis N17.2Acute kidney failure with medullary necrosis N17.8Other acute kidney failure N17.9Acute kidney failure, unspecified

Includes

Official

No Includes notes are included in this display for N17.0. Check the code and parent instructions in the Code Book.

Excludes 1

Official

posttraumatic renal failure (T79.5)Inherited from N17

Code First

Official

No Code First sequencing instructions are included in this display for N17.0. Check the code and parent instructions in the Code Book.

Use Additional

Official

No Use Additional Code instructions are included in this display for N17.0. Check the code and parent instructions in the Code Book.

Code Also

Official

associated underlying conditionInherited from N17

Buddy Documentation Tip

HCC Buddy guidance

Clear documentation of acute kidney failure with sudden onset

Pathologic evidence or clinical findings consistent with tubular necrosis

Laboratory values supporting acute renal dysfunction (elevated creatinine, BUN)

Documentation of precipitating factors or underlying causes

MEAT Support

HCC Buddy guidance

Clear documentation of acute kidney failure with sudden onset

Pathologic evidence or clinical findings consistent with tubular necrosis

Laboratory values supporting acute renal dysfunction (elevated creatinine, BUN)

Documentation of precipitating factors or underlying causes

Audit Caution

HCC Buddy guidance

Coding when documentation indicates chronic kidney disease with acute exacerbation

Using when tubular necrosis is not specifically documented or confirmed

Failing to code underlying conditions that precipitated the acute kidney failure

Confusing with acute-on-chronic kidney disease which requires different coding

Common Mistakes

HCC Buddy guidance

N17.9 — Acute kidney failure, unspecified without specific tubular necrosis

N18.6 — End stage renal disease, which is chronic rather than acute

R34 — Anuria and oliguria, which are symptoms rather than specific kidney failure

E87.6 — Hypokalemia, which may be consequence rather than primary diagnosis

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is N17.0 an HCC code?

N17.0 is not in the CMS-HCC V28 or V24 community payment model. N17.0 has a separate mapping under the CMS-HCC ESRD model (HCC 135 (Acute Renal Failure)); the applicable result needs member context.

Code: N17.0
Description: Acute kidney failure with tubular necrosis
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

HCC Category Mapping

ESRDHCC 135, Acute Renal Failure

Not separately weighted

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work N17.0 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT review for N17.0

For N17.0, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Coder workflow notes

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What This Code Means

N17.0 is the ICD-10-CM diagnosis code for acute kidney failure with tubular necrosis. Sudden loss of kidney function accompanied by death of the tubular cells in the kidney. This is a severe, life-threatening condition requiring immediate medical intervention. N17.0 sits in the ICD-10-CM chapter for diseases of the genitourinary system (n00-n99), within the section covering acute kidney failure and chronic kidney disease (n17-n19).

N17.0 has no mapping under the CMS-HCC V28 or V24 community payment models. N17.0 has a separate mapping under the CMS-HCC ESRD model (HCC 135 (Acute Renal Failure)); the applicable result needs member context. Do not assign V28 risk adjustment value from this page; verify the applicable model and payment year before using this code for risk adjustment.

Document the cause of acute kidney failure (sepsis, hypotension, nephrotoxic drugs, etc.) as this affects treatment and prognosis.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for N17.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Document the cause of acute kidney failure (sepsis, hypotension, nephrotoxic drugs, etc.) as this affects treatment and prognosis
•Monitor and document urine output, creatinine levels, and whether dialysis is required

Clinical Significance

Acute kidney failure with tubular necrosis represents a severe, life-threatening condition requiring immediate medical intervention and intensive monitoring. This diagnosis significantly impacts risk adjustment due to the high mortality risk, need for specialized care including potential dialysis, and complex management of underlying causes.

Documentation Requirements

✓Clear documentation of acute kidney failure with sudden onset
✓Pathologic evidence or clinical findings consistent with tubular necrosis
✓Laboratory values supporting acute renal dysfunction (elevated creatinine, BUN)
✓Documentation of precipitating factors or underlying causes
✓Current treatment plan including fluid management and potential dialysis
✓Assessment of urine output and electrolyte status
✓Monitoring plan for progression and recovery
✓Documentation excluding chronic kidney disease as primary diagnosis

Commonly Confused Codes

•N17.9: Acute kidney failure, unspecified without specific tubular necrosis
•N18.6: End stage renal disease, which is chronic rather than acute
•R34: Anuria and oliguria, which are symptoms rather than specific kidney failure
•E87.6: Hypokalemia, which may be consequence rather than primary diagnosis
•N99.0: Postprocedural (acute) kidney failure, which is procedure-related

Child Codes

N17.0Acute kidney failure with tubular necrosis

N17.1Acute kidney failure with acute cortical necrosis

N17.2Acute kidney failure with medullary necrosis

N17.8Other acute kidney failure

N17.9Acute kidney failure, unspecified

Code Hierarchy

└N17Acute kidney failure └N17.0Acute kidney failure with tubular necrosis

└N17.0Acute kidney failure with tubular necrosis

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N17.0

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What This Code Means

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N17.0 ICD-10-CM Code: Acute kidney failure with tubular necrosis

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N17.0

Is N17.0 an HCC code?

HCC Category Mapping

MEAT review for N17.0

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What This Code Means

Coding Tips

Clinical Significance

Documentation Requirements

Commonly Confused Codes

Child Codes

Code Hierarchy

Also searched as

More on N17.0

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