K86.1 Other chronic pancreatitis

The ICD-10-CM code for Other chronic pancreatitis is K86.1 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

11: Diseases of the digestive system (K00-K95)

Section

K80-K87: Disorders of gallbladder, biliary tract and pancreas (K80-K87)

Category K86

9 codes (7 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to K86.1:

• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › relapsing, chronic
• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › chronic (infectious)
• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › interstitial (chronic)
• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › cystic (chronic)
• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › fibrous (chronic)
• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › chronic (infectious) › relapsing
• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › chronic (infectious) › recurrent
• Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) › pancreatic duct - code to underlying condition › with chronic pancreatitis

Inclusion Terms

• Chronic pancreatitis NOS
• Infectious chronic pancreatitis
• Recurrent chronic pancreatitis
• Relapsing chronic pancreatitis

U.S. Hospital Utilization

• An estimated 161,310 U.S. inpatient stays in 2023 included K86.1 among the documented diagnoses.
• 5,415 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Chapter 11 reserved for future expansion

11. Chapter 11: Diseases of the Digestive System (K00-K95) Reserved for future guideline expansion

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)