K85.82 Other acute pancreatitis with infected necrosis

ICD-10-CM K85.82: Other acute pancreatitis with infected necrosis

ICD-10-CM code K85.82 represents the diagnosis of other acute pancreatitis with infected necrosis, categorized under the parent concept K85.8. Clinical literature establishes infected pancreatic necrosis as a severe, life-threatening complication of acute pancreatitis associated with sepsis and high mortality. Coding guidance emphasizes that precise physician documentation of infected necrosis is necessary to support claims for this specific diagnosis. 1 2 5

Plain-language overview

Code K85.82 identifies a diagnosis of other acute pancreatitis complicated by infected necrosis, classifying this specific health condition within the ICD-10-CM terminology system. 1

What this code represents

The terminology record for K85.82 lists its parent concept as K85.8, which is other acute pancreatitis, and assigns it the semantic type of disease or syndrome. 1

Clinical context

Clinical literature establishes that infection of pancreatic necrosis is a major life-threatening complication of severe acute pancreatitis and a primary risk factor for sepsis-related multiple organ failure. 2

Differentiating between sterile and infected pancreatic necrosis is essential for clinical management, as infected necrosis carries a mortality rate higher than twenty percent. 2

Documentation considerations

Auditors frequently target acute pancreatitis claims when there is a lack of documented infected necrosis to support specific diagnosis codes, making explicit physician documentation critical. 5

Coverage and utilization context

The code K85.82 appears within a broader list of diagnosis codes used to define acute pancreatitis for surveillance tools and specific diagnosis-related groups. 4 6

What the sources add

While the terminology record provides the official code label and hierarchy, clinical literature adds operational context by detailing the severe morbidity and mortality associated with the infected necrosis condition. 1 2

Coding guidance and diagnosis-related group mappings provide operational context by listing this specific diagnosis among claims frequently scrutinized by Medicare auditors for documentation adequacy. 5 6

Questions to verify

The supplied excerpts do not establish whether K85.82 is a billable specific code or provide official instructional notes regarding encounter sequencing or laterality for this diagnosis. 1

Sources

1. ICD-10-CM K85.82 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Management of acute pancreatitis: from surgery to interventional intensive care — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Phecode 577 · ExPRSweb — csg.sph.umich.edu; accessed 2026-07-27.
4. Disclaimer — sentinelinitiative.org; accessed 2026-07-27.
5. Pancreatitis ICD-10 Coding Guide (FY2026) — cco.us; accessed 2026-07-27.
6. CodeMap® DRG — codemap.com; accessed 2026-07-27.