2027 ICD-10-CM Diagnosis Code K85.92Acute pancreatitis with infected necrosis, unspecified
ICD-10-CM Codes›K00–K95›K80-K87›K85
- Billable — Valid for Submission
- MCC — Major Complication or Comorbidity
- Not Chronic
K85.92 is a billable ICD-10-CM diagnosis code for acute pancreatitis with infected necrosis, unspecified. 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, 791, 793. 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 24 closely related codes. Coders also document this condition as abscess of pancreas. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pancreatic disorders (excluding diabetes).
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abscess of pancreas
- Acute pancreatitis due to infection
- Acute suppurative pancreatitis
- Infected pancreatic necrosis
- Infectious pancreatitis
- Pancreatic collection
- Suppurative pancreatitis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to K85.92: its own notes plus those printed at K85 and Chapter 11. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- acute (recurrent) pancreatitis
- subacute pancreatitis
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.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name K85.92, its category, or a range that includes it.
Code First 1
These codes say to code first a condition named in the note, and K85.92 is one of the conditions named.
- E08 Diabetes mellitus due to underlying condition
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.
Clinical InformationClinical
Acute Pancreatitis
an acute inflammatory process that leads to necrosis of the pancreatic parenchyma. signs and symptoms include severe abdominal pain, nausea, vomiting, diarrhea, fever, and shock. causes include alcohol consumption, presence of gallstones, trauma, and drugs.
Patient EducationClinical
Infectious Diseases
Germs, or microbes, are found everywhere - in the air, soil, and water. There are also germs on your skin and in your body. Many of them are harmless, and some can even be helpful. But some of them can make you sick. Infectious diseases are diseases that are caused by germs.
The full article covers:
- What are infectious diseases?
- What are the different types of germs that cause infectious diseases?
- How can you get infectious diseases?
- What are the symptoms of infectious diseases?
- What are the treatments for infectious diseases?
- Can infectious diseases be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert K85.92 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code History & ChangesHistory
Replacement K85.92 replaces the following previously assigned code(s):
- K85.9 - Acute pancreatitis, unspecified
Questions About K85.92Overview
What is the ICD-10 code for acute pancreatitis with infected necrosis, unspecified?
The ICD-10-CM code for acute pancreatitis with infected necrosis, unspecified is K85.92 (sometimes written as K8592). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is K85.92 (Acute pancreatitis, unspecified) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report acute pancreatitis with infected necrosis, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does K85.92 group to?
When acute pancreatitis with infected necrosis, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 440, 438, 439, with relative weights from 0.5966 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.
Is K85.92 a CC or MCC?
CMS lists K85.92 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 24 closely related codes in its exclusion list.
What is the ICD-9 equivalent of K85.92?
Under the General Equivalence Mappings, acute pancreatitis with infected necrosis, unspecified converts to ICD-9-CM 577.0 (acute pancreatitis). The mapping is approximate, so confirm the match fits the documentation.
