2027 ICD-10-CM Diagnosis Code Q79.4Prune belly syndrome
ICD-10-CM Codes›Q00-Q99›Q65-Q79›Q79
- Billable — Valid for Submission
- MCC — Major Complication or Comorbidity
- POA Exempt
- Chronic Condition
Q79.4 is a billable ICD-10-CM diagnosis code for prune belly syndrome. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 393 through 395. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. It does not count, however, when the principal diagnosis is one of 5 closely related codes. The code is exempt from POA reporting. Coders also document this condition as congenital absence of abdominal muscle. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Musculoskeletal congenital conditions.
Code Identity
Code Classification
Present on Admission (POA)Billing
Q79.4 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Congenital malformations and deformations of the musculoskeletal system (Q65-Q79).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Congenital absence of abdominal muscle
- Congenital prolapse of mucous membrane of urinary bladder
- Congenital prolapse of urinary bladder
- Hypogonadism with prune belly syndrome
- Prune belly syndrome
- Prune belly syndrome with pulmonic stenosis, intellectual disability and deafness
- Structural abnormality of abdominal wall muscle
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q79.4: its own notes plus those printed at Q79 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 prolapse of bladder mucosa
- Eagle-Barrett syndrome
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.
- congenital (sternomastoid) torticollis (Q68.0)
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 Q79.4, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Abdomen, abdominal See Also: condition;
Aplasia See Also: Agenesis;
Prune belly (syndrome) Q79.4
Syndrome See Also: Disease;
muscle deficiency Q79.4
Eagle-Barrett Q79.4
prune belly Q79.4
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Prune Belly Syndrome
a syndrome characterized by abdominal wall musculature deficiency, cryptorchism, and urinary tract abnormalities. the syndrome derives its name from its characteristic distended abdomen with wrinkled skin.
Patient EducationClinical
Birth Defects
A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.
The full article covers:
- What are birth defects?
- What causes birth defects?
- Who is at risk of having a baby with birth defects?
- How are birth defects diagnosed?
- What are the treatments for birth defects?
- Can birth defects be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert Q79.4 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q79.4Overview
What is the ICD-10 code for prune belly syndrome?
The ICD-10-CM code for prune belly syndrome is Q79.4 (sometimes written as Q794). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q79.4 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report prune belly syndrome on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q79.4 group to?
When prune belly syndrome is the principal diagnosis on an inpatient stay, it groups to MS-DRG 394, 395, 393, with relative weights from 0.6379 to 1.5877 depending on complications. Higher weights mean higher Medicare reimbursement.
Is Q79.4 a CC or MCC?
CMS lists Q79.4 as an MCC (major complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It does not count when the principal diagnosis is one of the 5 closely related codes in its exclusion list.
Is Q79.4 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 prune belly syndrome on inpatient claims. The code appears in the Congenital malformations and deformations of the musculoskeletal system (Q65-Q79) range of the CMS exempt list.
