2027 ICD-10-CM Diagnosis Code Q45.2Congenital pancreatic cyst

ICD-10-CM Codes›Q00-Q99›Q38-Q45›Q45

ICD-10-CM Q45.2
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Q45.2 is a billable ICD-10-CM diagnosis code for congenital pancreatic cyst. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 438 through 440. 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 6 closely related codes. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Digestive congenital anomalies.

Code Identity

ICD-10-CM Code
Q45.2
Billable Status
Yes — Valid for Submission
Code Describes
Congenital pancreatic cyst
Short Description
Congenital pancreatic cyst
Same as the full description in the CMS dataset.
Parent Code
Q45
Other congenital malformations of digestive system

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ38-Q45Other congenital malformations of the digestive system
CategoryQ45Other congenital malformations of digestive system
This CodeQ45.2Congenital pancreatic cyst

Present on Admission (POA)Billing

Q45.2 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Other congenital malformations of the digestive system (Q38-Q45).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Congenital pancreatic cyst
  • Cyst of pancreas
  • Polycystic disease of pancreas

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Q45.2: its own notes plus those printed at Q45 and 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.

From Q45 Other congenital malformations of digestive system applies to 6 codes
  • congenital diaphragmatic hernia (Q79.0)
  • congenital hiatus hernia (Q40.1)
From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • inborn errors of metabolism (E70-E88)

Notes

General instructions on how these codes are used.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • 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.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MAL002
Digestive congenital anomalies
Default principal diagnosis: inpatient Yes · outpatient Yes

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 Q45.2 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
751.7 Pancreas anomalies
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Q45.2Overview

What is the ICD-10 code for congenital pancreatic cyst?

The ICD-10-CM code for congenital pancreatic cyst is Q45.2 (sometimes written as Q452). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Q45.2 (Other congenital malformations of digestive system) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report congenital pancreatic cyst on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Q45.2 group to?

When congenital pancreatic cyst is the principal diagnosis on an inpatient stay, it groups to MS-DRG 440, 438, 439, with relative weights from 0.5966 to 1.5763 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q45.2 a CC or MCC?

CMS lists Q45.2 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 6 closely related codes in its exclusion list.

Is Q45.2 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 pancreatic cyst on inpatient claims. The code appears in the Other congenital malformations of the digestive system (Q38-Q45) range of the CMS exempt list.