2027 ICD-10-CM Diagnosis Code Q62.0Congenital hydronephrosis
ICD-10-CM Codes›Q00-Q99›Q60-Q64›Q62
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- POA Exempt
- Chronic Condition
Q62.0 is a billable ICD-10-CM diagnosis code for congenital hydronephrosis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 698 through 700. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 7 closely related codes. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Genitourinary congenital anomalies.
Code Identity
Code Classification
Present on Admission (POA)Billing
Q62.0 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Congenital malformations of the urinary system (Q60-Q64).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Bilateral congenital primary hydronephrosis
- Bilateral hydronephrosis
- Congenital hydronephrosis
- Congenital hydronephrosis due to ureteral obstruction
- Congenital hydronephrosis due to ureteral orifice obstruction
- Congenital hydronephrosis due to urinary bladder obstruction
- Congenital megacalycosis
- Congenital obstruction of ureter
- Congenital obstruction of ureteral orifice
- Congenital secondary hydronephrosis
- Dilatation of calyx
- Megacalycosis
- Obstruction of ureteral orifice
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q62.0: its own notes plus those printed at Chapter 17. A note printed at a category, block or chapter applies to every code under it.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- Codes from this chapter are not for use on maternal records
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name Q62.0, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Hydronephrosis (atrophic) (early) (functionless) (intermittent) (primary) (secondary) NEC N13.30
congenital Q62.0
Malformation (congenital) See Also: Anomaly;
hydronephrosis Q62.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Congenital Hydronephrosis
collection of urine in the renal pelvis that results in dilatation of the renal pelvis and calyces that is present at birth.
Patient EducationClinical
Kidney Diseases
You have two kidneys, each about the size of your fist. They are near the middle of your back, just below the rib cage. Inside each kidney there are about a million tiny structures called nephrons. They filter your blood. They remove wastes and extra water, which become urine. The urine flows through tubes called ureters.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert Q62.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q62.0Overview
What is the ICD-10 code for congenital hydronephrosis?
The ICD-10-CM code for congenital hydronephrosis is Q62.0 (sometimes written as Q620). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q62.0 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report congenital hydronephrosis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q62.0 group to?
When congenital hydronephrosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 699, 698, 700, with relative weights from 0.6740 to 1.6400 depending on complications. Higher weights mean higher Medicare reimbursement.
Is Q62.0 a CC or MCC?
CMS lists Q62.0 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 7 closely related codes in its exclusion list.
Is Q62.0 exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for congenital hydronephrosis on inpatient claims. The code appears in the Congenital malformations of the urinary system (Q60-Q64) range of the CMS exempt list.
