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N99.0 ICD-10-CM Code: Postprocedural (acute) (chronic) kidney failure

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

Coding at a Glance

Tabular directives
3 Excludes2 · 1 use-additional code

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 698 — OTHER KIDNEY AND URINARY TRACT DIAGNOSES WITH MCC (MDC 11)
  • MS-DRG 699 — OTHER KIDNEY AND URINARY TRACT DIAGNOSES WITH CC (MDC 11)
  • MS-DRG 700 — OTHER KIDNEY AND URINARY TRACT DIAGNOSES 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 N99.0 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 N99.0 itself; “inherited from” names the category or block whose note applies here.

Excludes2 — Not Included Here

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

Source: inherited from N99

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code to type of kidney disease

Coder workflow for N99.0

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

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 conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.

Official instructions as workflow

  • Excludes2 — not part of N99.0(3 notes)

    Coding workflow: The conditions named in this note are not included in N99.0. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareN30.4, M80.8, M81.8

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

  • Use Additional Code — after identifying N99.0(1 note)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with N99.0 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    See the official tabular notes · Guidelines I.A.13

Coding decision scenarios

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

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with N99.0?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

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

Postprocedural (acute) (chronic) kidney failure is a billable ICD-10-CM diagnosis code (N99.0).

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 (7)

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.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

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 N99.0 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 14 Excludes2 notes across 2 chapters: N17 — Acute kidney failure, N17-N19 — Acute kidney failure and chronic kidney disease (N17-N19), N18 — Chronic kidney disease (CKD), N19 — Unspecified kidney failure, T80 — Complications following infusion, transfusion and therapeutic injection (via N99.-), T80-T88 — Complications of surgical and medical care, not elsewhere classified (T80-T88) (via N99.-), T81 — Complications of procedures, not elsewhere classified (via N99.-), T82 — Complications of cardiac and vascular prosthetic devices, implants and grafts (via N99.-), T83 — Complications of genitourinary prosthetic devices, implants and grafts (via N99.-), T84 — Complications of internal orthopedic prosthetic devices, implants and grafts (via N99.-), T85 — Complications of other internal prosthetic devices, implants and grafts (via N99.-), T86 — Complications of transplanted organs and tissue (via N99.-), T87 — Complications peculiar to reattachment and amputation (via N99.-), T88 — Other complications of surgical and medical care, not elsewhere classified (via N99.-).

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

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 5 MS-DRGs: DRG 698 (MDC 11), DRG 699 (MDC 11), DRG 700 (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):GEN026 — Postprocedural or postoperative genitourinary system complication (default); GEN002 — Acute and unspecified renal failure.

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 category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical categories (Postprocedural or postoperative genitourinary system complication, Acute and unspecified renal failure).

N17.2 — Acute kidney failure with medullary necrosis, N17.8 — Other acute kidney failure, N17.9 — Acute kidney failure, unspecified, N19 — Unspecified kidney failure, N98.0 — Infection associated with artificial insemination, N98.1 — Hyperstimulation of ovaries, N98.2 — Complications of attempted introduction of fertilized ovum following in vitro fertilization, N98.3 — Complications of attempted introduction of embryo in embryo transfer, N98.8 — Other complications associated with artificial fertilization, N98.9 — Complication associated with artificial fertilization, unspecified, N99.110 — Postprocedural urethral stricture, male, meatal, N99.111 — Postprocedural bulbous urethral stricture, male, N99.112 — Postprocedural membranous urethral stricture, male, N99.113 — Postprocedural anterior bulbous urethral stricture, male, N99.114 — Postprocedural urethral stricture, male, unspecified, N99.115 — Postprocedural fossa navicularis urethral stricture, N99.116 — Postprocedural urethral stricture, male, overlapping sites, N99.12 — Postprocedural urethral stricture, female, N99.2 — Postprocedural adhesions of vagina, N99.3 — Prolapse of vaginal vault after hysterectomy, +38 more

Same Index main term, other category

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

N32.89 — Other specified disorders of bladder (bladder), N50.89 — Other specified disorders of the male genital organs (testis), N52.9 — Male erectile dysfunction, unspecified (erection), N64.1 — Fat necrosis of breast (breast), N70.92 — Oophoritis, unspecified (ovary), N89.8 — Other specified noninflammatory disorders of vagina (vagina), N90.89 — Other specified noninflammatory disorders of vulva and perineum (vulva), N91.0 — Primary amenorrhea (menstruation at puberty), N97.0 — Female infertility associated with anovulation (ovulation causing infertility), N97.1 — Female infertility of tubal origin (tubal), O08.4 — Renal failure following ectopic and molar pregnancy (following, ectopic or molar pregnancy), O29.12 — Cardiac failure due to anesthesia during pregnancy (heart, complicating, anesthesiaor other sedation, in pregnancy), O29.6 — Failed or difficult intubation for anesthesia during pregnancy (intubation during anesthesia, in pregnancy), O32.4 — Maternal care for high head at term (descent of head), O61.0 — Failed medical induction of labor (induction, medical), O61.1 — Failed instrumental induction of labor (induction, surgical), O61.8 — Other failed induction of labor (induction, specified NEC), O61.9 — Failed induction of labor, unspecified (induction), O62.0 — Primary inadequate contractions (cervical dilatation in labor), O66.40 — Failed trial of labor, unspecified (trial of labor), +218 more

Contextual Map

Every relationship of N99.0 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 N99.0 with these 8 related codes in Claim Check

Hierarchy

Referenced by Excludes2 notes (14)

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

  • Anuria, postprocedural[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Block, blocked, kidney, postcystoscopic or postprocedural[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Complication (s) (from) (of), genitourinary, postprocedural, renal failure[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Failure, failed, renal, postprocedural[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Necrosis, necrotic (ischemic), tubular (acute) (anoxic) (renal) (toxic), postprocedural[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Nephrosis, nephrotic (Epstein's) (syndrome) (congenital), tubular (acute), postprocedural[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Oliguria, postprocedural[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (40)

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. "N99.0 — Postprocedural (acute) (chronic) kidney failure." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/n99.0-postprocedural-acute-chronic-kidney-failure

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Postprocedural (acute) (chronic) 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 N99.0 in its code family, with their registry titles.

View all codes in the N99 family