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N17.8 ICD-10-CM Code: Other acute kidney failure

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
1 Excludes1 · 10 Excludes2 · 1 code-also instruction
Risk adjustment
CMS-HCC V22 category 135

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 673 — OTHER KIDNEY AND URINARY TRACT PROCEDURES WITH MCC (MDC 11)
  • MS-DRG 674 — OTHER KIDNEY AND URINARY TRACT PROCEDURES WITH CC (MDC 11)
  • MS-DRG 675 — OTHER KIDNEY AND URINARY TRACT PROCEDURES WITHOUT CC/MCC (MDC 11)
  • MS-DRG 682 — RENAL FAILURE WITH MCC (MDC 11)
  • MS-DRG 683 — RENAL FAILURE WITH CC (MDC 11)
  • MS-DRG 684 — RENAL FAILURE WITHOUT CC/MCC (MDC 11)
  • MS-DRG 791 — PREMATURITY WITH MAJOR PROBLEMS (MDC 15)
  • MS-DRG 793 — FULL TERM NEONATE WITH MAJOR PROBLEMS (MDC 15)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for N17.8 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on N17.8 itself; “inherited from” names the category or block whose note applies here.

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Source: inherited from N17

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Source: inherited from N17-N19

Code Also

Additional codes that may be required to fully describe the encounter.

  • associated underlying condition

Source: inherited from N17

Coder workflow for N17.8

MedCoder structured workflow — derived from this code’s own official record

Before you code N17.8

  1. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on N17.8; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

    ReviewN17.0, N17.1, N17.2

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

  2. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with N17.8. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

    See the official tabular notes

Choose the right path

  1. Does the documentation support a condition named in N17.8’s Excludes1 note?
    Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
    No → Continue.

    ReviewT79.5

Consider N17.8. Then review the Code Also note, and confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Acuity
Acute or chronic as documented; when both are documented and separate codes exist, both are reported with the acute code first (Guidelines I.B.8).
The associated condition or complication
Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes1 — check before selecting N17.8(1 note)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with N17.8: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareT79.5

    See the official tabular notes · Guidelines I.A.12.a

  • Excludes2 — not part of N17.8(10 notes)

    Coding workflow: The conditions named in this note are not included in N17.8. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareP96.0, N14, R39.2, D59.3, K76.7, O90.41

    See the official tabular notes · Guidelines I.A.12.b

  • Code Also — related condition(1 note)

    Coding workflow: Review the related condition when both are documented and the instruction applies. A Code Also note does not fix sequencing; the order follows the circumstances of the encounter.

    See the official tabular notes · Guidelines I.A.17

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: Both the condition N17.8 describes and a condition named in its Excludes1 note are documented for the same encounter.

Coding question: Can both codes be reported?

Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.

Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).

ReviewT79.5

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Code Overview

Other acute kidney failure is a billable ICD-10-CM diagnosis code (N17.8).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (1)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Decision Points

The directives on this code's own record, as a pre-claim checklist.

  1. 1 Code Also note — a second code may apply; the guidelines leave its sequencing to the circumstances of the encounter. See the Code Also notes
  2. 1 Excludes1 entry — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 notes
  3. 10 Excludes2 entries — those conditions are not part of this code and may be reported additionally when documented. See the Excludes2 notes

Checklist rows are derived from this code's own official directives; the wording of each check is MedCoder editorial. The official notes themselves are in the sections each row links to.

Verify Before Coding

  • CC as a secondary diagnosis (FY2026). Can raise the stay's MS-DRG severity tier.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name N17.8 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 1 Excludes1 note: N19 — Unspecified kidney failure (via N17.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 2 Excludes2 notes across 2 chapters: I12 — Hypertensive chronic kidney disease (via N17.-), N14.11 — Contrast-induced nephropathy (via N17.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Referenced by 1 Code First instruction: I5A — Non-ischemic myocardial injury (non-traumatic) (via N17.-).

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

Referenced by 4 Use Additional Code instructions across 3 chapters: I75.81 — Atheroembolism of kidney (via N17.-), M31.11 — Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA] (via N17.-), R65.11 — Systemic inflammatory response syndrome (SIRS) of non-infectious origin with acute organ dysfunction (via N17.-), R65.2 — Severe sepsis (via N17.-).

These codes instruct coders to additionally report this code when it applies.

Referenced by 13 Code Also instructions across 4 chapters: D59.3 — Hemolytic-uremic syndrome (via N17.-), I16.1 — Hypertensive emergency (via N17.-), M35.81 — Multisystem inflammatory syndrome (via N17.-), N00 — Acute nephritic syndrome (via N17.-), N00-N08 — Glomerular diseases (N00-N08) (via N17.-), N01 — Rapidly progressive nephritic syndrome (via N17.-), N02 — Recurrent and persistent hematuria (via N17.-), N03 — Chronic nephritic syndrome (via N17.-), N04 — Nephrotic syndrome (via N17.-), N05 — Unspecified nephritic syndrome (via N17.-), N06 — Isolated proteinuria with specified morphological lesion (via N17.-), N07 — Hereditary nephropathy, not elsewhere classified (via N17.-), N08 — Glomerular disorders in diseases classified elsewhere (via N17.-).

These codes suggest coding this condition alongside when both are present.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: CC — Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 267 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 8 MS-DRGs: DRG 673 (MDC 11), DRG 674 (MDC 11), DRG 675 (MDC 11), DRG 682 (MDC 11), DRG 683 (MDC 11), DRG 684 (MDC 11), DRG 791 (MDC 15), DRG 793 (MDC 15).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):GEN002 — Acute and unspecified renal failure (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical process (MS-DRG)

Acts as CC — raises the severity of other admissions. CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

N14.2 — Nephropathy induced by unspecified drug, medicament or biological substance, N14.3 — Nephropathy induced by heavy metals, N14.4 — Toxic nephropathy, not elsewhere classified, N15.0 — Balkan nephropathy, N15.1 — Renal and perinephric abscess, N15.8 — Other specified renal tubulo-interstitial diseases, N15.9 — Renal tubulo-interstitial disease, unspecified, N17.0 — Acute kidney failure with tubular necrosis, N17.1 — Acute kidney failure with acute cortical necrosis, N17.2 — Acute kidney failure with medullary necrosis, N17.9 — Acute kidney failure, unspecified, N18.1 — Chronic kidney disease, stage 1, N18.2 — Chronic kidney disease, stage 2 (mild), N18.30 — Chronic kidney disease, stage 3 unspecified, N18.31 — Chronic kidney disease, stage 3a, N18.32 — Chronic kidney disease, stage 3b, N18.4 — Chronic kidney disease, stage 4 (severe), N18.5 — Chronic kidney disease, stage 5, N18.6 — End stage renal disease, N18.9 — Chronic kidney disease, unspecified, +246 more

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Acute and unspecified renal failure).

K76.7 — Hepatorenal syndrome, K91.83 — Postprocedural hepatorenal syndrome, N17.0 — Acute kidney failure with tubular necrosis, N17.1 — Acute kidney failure with acute cortical necrosis, N17.2 — Acute kidney failure with medullary necrosis, N17.9 — Acute kidney failure, unspecified, N19 — Unspecified kidney failure, N99.0 — Postprocedural (acute) (chronic) kidney failure, O90.4 — Postpartum acute kidney failure, O90.41 — Hepatorenal syndrome following labor and delivery, O90.49 — Other postpartum acute kidney failure

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Failure, failed”; these codes share that main term but sit in a different category of the Tabular List.

K72.11 — Chronic hepatic failure with coma (hepatic, chronic, with coma), K72.90 — Hepatic failure, unspecified without coma (hepatic), K72.91 — Hepatic failure, unspecified with coma (hepatic, with coma), K76.7 — Hepatorenal syndrome (hepatorenal), K90.83 — Intestinal failure (intestinal), K91.82 — Postprocedural hepatic failure (hepatic, postprocedural), M27.61 — Osseointegration failure of dental implant (dental implant, pre-integration), M27.62 — Post-osseointegration biological failure of dental implant (dental implant, due to, occlusal trauma), M27.63 — Post-osseointegration mechanical failure of dental implant (dental implant, post-osseointegration, mechanical), M27.69 — Other endosseous dental implant failure (dental implant), N18.6 — End stage renal disease (renal, end stage), N18.9 — Chronic kidney disease, unspecified (renal, chronic), N19 — Unspecified kidney failure (renal), N52.9 — Male erectile dysfunction, unspecified (erection), N91.0 — Primary amenorrhea (menstruation at puberty), N97.0 — Female infertility associated with anovulation (ovulation causing infertility), N99.0 — Postprocedural (acute) (chronic) kidney failure (renal, postprocedural), N99.89 — Other postprocedural complications and disorders of genitourinary system (vasectomy), O08.4 — Renal failure following ectopic and molar pregnancy (renal, following, ectopic or molar pregnancy), O29.12 — Cardiac failure due to anesthesia during pregnancy (heart, complicating, anesthesiaor other sedation, in pregnancy), +126 more

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

Gamma-glutamyl Transferase (GGT) Test, HIV Screening Test, Partial Thromboplastin Time (PTT) Test, Prothrombin Time Test and INR (PT/INR)

Contextual Map

Every relationship of N17.8 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run N17.8 with these 16 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes

Referenced by Code First instructions

Referenced by Use Additional Code instructions

Referenced by Code Also instructions (13)

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 11 — Diseases and Disorders of the Kidney and Urinary Tract[MDC crossing]: “Diseases and Disorders of the Kidney and Urinary Tract — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 3,574 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026
  • MDC 15 — Newborns and Other Neonates with Conditions Originating in Perinatal Period[MDC crossing]: “Newborns and Other Neonates with Conditions Originating in Perinatal Period — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

  • Failure, failed, renal, acute, specified NEC[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "N17.8 — Other acute kidney failure." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/n17.8-other-acute-kidney-failure

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Other acute kidney failure

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to N17.8 in its code family, with their registry titles.

View all codes in the N17 family