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Q62.0 ICD-10-CM Code: Congenital hydronephrosis

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

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 v44, 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)

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.

Code Overview

Congenital hydronephrosis is a billable ICD-10-CM diagnosis code (Q62.0).

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 (2)

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

  • CC as a secondary diagnosis (FY2027). 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 Q62.0 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 1 Excludes2 note: N13 — Obstructive and reflux uropathy.

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

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 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 7 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 3 MS-DRGs: DRG 698 (MDC 11), DRG 699 (MDC 11), DRG 700 (MDC 11).

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

Clinical classification (AHRQ CCSR):MAL003 — Genitourinary congenital anomalies (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.

N13.9 — Obstructive and reflux uropathy, unspecified, Q62.10 — Congenital occlusion of ureter, unspecified, Q62.11 — Congenital occlusion of ureteropelvic junction, Q62.12 — Congenital occlusion of ureterovesical orifice, Q62.2 — Congenital megaureter, Q62.39 — Other obstructive defects of renal pelvis and ureter

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Genitourinary congenital anomalies).

Q61.01 — Congenital single renal cyst, Q61.02 — Congenital multiple renal cysts, Q61.11 — Cystic dilatation of collecting ducts, Q61.19 — Other polycystic kidney, infantile type, Q61.2 — Polycystic kidney, adult type, Q61.3 — Polycystic kidney, unspecified, Q61.4 — Renal dysplasia, Q61.5 — Medullary cystic kidney, Q61.8 — Other cystic kidney diseases, Q61.9 — Cystic kidney disease, unspecified, Q62.10 — Congenital occlusion of ureter, unspecified, Q62.11 — Congenital occlusion of ureteropelvic junction, Q62.12 — Congenital occlusion of ureterovesical orifice, Q62.2 — Congenital megaureter, Q62.31 — Congenital ureterocele, orthotopic, Q62.32 — Cecoureterocele, Q62.39 — Other obstructive defects of renal pelvis and ureter, Q62.4 — Agenesis of ureter, Q62.5 — Duplication of ureter, Q62.60 — Malposition of ureter, unspecified, +137 more

Same Index main term, other category

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

Q55.21 — Polyorchism (testis and scrotum, polyorchism), Q55.22 — Retractile testis (testis and scrotum, retractile testis), Q55.23 — Scrotal transposition (testis and scrotum, scrotal transposition), Q55.29 — Other congenital malformations of testis and scrotum (testis and scrotum, specified NEC), Q55.3 — Atresia of vas deferens (vas deferens, atresia), Q55.4 — Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate (prostate), Q55.5 — Congenital absence and aplasia of penis (penis, aplasia), Q55.61 — Curvature of penis (lateral) (penis, curvature), Q55.62 — Hypoplasia of penis (penis, hypoplasia), Q55.69 — Other congenital malformation of penis (penis), Q63.0 — Accessory kidney (kidney, accessory), Q63.1 — Lobulated, fused and horseshoe kidney (kidney, horseshoe), Q63.2 — Ectopic kidney (kidney, malposition), Q63.3 — Hyperplastic and giant kidney (kidney, giant), Q63.8 — Other specified congenital malformations of kidney (kidney, specified type NEC), Q63.9 — Congenital malformation of kidney, unspecified (kidney), Q64.2 — Congenital posterior urethral valves (urethra, posterior valves), Q64.31 — Congenital bladder neck obstruction (bladder, neck obstruction), Q64.32 — Congenital stricture of urethra (urethra, stricture), Q64.5 — Congenital absence of bladder and urethra (urethra, aplasia), +167 more

Contextual Map

Every relationship of Q62.0 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 Q62.0 with this related code in Claim Check

Hierarchy

Referenced by Excludes2 notes

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. 3,578 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Hydronephrosis NEC (atrophic) (early) (functionless) (intermittent) (primary) (secondary), congenital[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Malformation (congenital), kidney, hydronephrosis[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (20)

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 FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 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 — v44 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. "Q62.0 — Congenital hydronephrosis." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/q62.0-congenital-hydronephrosis

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Congenital hydronephrosis

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, 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 Q62.0 in its code family, with their registry titles.

View all codes in the Q62 family