2027 ICD-10-CM Diagnosis Code Q63.8Other specified congenital malformations of kidney
ICD-10-CM Codes›Q00-Q99›Q60-Q64›Q63
- Billable — Valid for Submission
- POA Exempt
- Chronic Condition
Q63.8 is a billable ICD-10-CM diagnosis code for other specified congenital malformations of kidney. 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. 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
Q63.8 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.
- Accessory kidney
- Acrorenal field defect, ectodermal dysplasia, and lipoatrophic diabetes
- Bilateral congenital primary hydronephrosis
- Bilateral hydronephrosis
- Congenital abnormal shape of kidney
- Congenital asymmetry of kidneys
- Congenital calculus of kidney
- Congenital calyceal diverticulum
- Congenital dilatation of renal pelvis
- Congenital hydrocalicosis
- Congenital hydronephrosis
- Congenital megacalycosis
- Congenital megacalycosis of bilateral kidneys
- Congenital membranous nephropathy due to maternal anti-neutral endopeptidase alloimmunization
- Diffuse hyperplastic perilobular nephroblastomatosis
- Dilatation of calyx
- Dilatation of renal pelvis
- Diverticulum of renal calyx
- Inequality in size of kidneys
- Infundibulopelvic stenosis multicystic kidney syndrome
- Megacalycosis
- Nodular renal blastema
- PELVIS syndrome
- Prominent renal pelvis
- Renal caliceal diverticuli and deafness syndrome
- Trifid kidney
- Trifid pelvis of kidney
- Triple kidney with triple pelvis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q63.8: its own notes plus those printed at Q63 and Chapter 17. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Congenital renal calculi
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
kidney Q63.8
kidney pelvis Q63.8
renal pelvis Q63.8
congenital Q63.8
L-shaped kidney Q63.8
Malformation (congenital) See Also: Anomaly;
specified type NEC Q63.8
congenital Q63.8
Ramifying renal pelvis Q63.8
congenital Q63.8
Trifid See Also: Accessory;
kidney (pelvis) Q63.8
kidney, congenital Q63.8
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 Q63.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q63.8Overview
What is the ICD-10 code for other specified congenital malformations of kidney?
The ICD-10-CM code for other specified congenital malformations of kidney is Q63.8 (sometimes written as Q638). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q63.8 (Other congenital malformations of kidney) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other specified congenital malformations of kidney on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q63.8 group to?
When other specified congenital malformations of kidney 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 Q63.8 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 other specified congenital malformations of kidney on inpatient claims. The code appears in the Congenital malformations of the urinary system (Q60-Q64) range of the CMS exempt list.
Can Q63.8 be reported with a code from N04?
Not as a rule. The Excludes1 note at Q63, which applies to Q63.8, lists "congenital nephrotic syndrome (N04.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
