DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

K85 Acute pancreatitis

  • Header · not billable

K85 is not billable. The category heads 18 billable codes in FY2027, grouped under 6 subdivisions.

Index → code

  • Fitz's syndrome (acute hemorrhagic pancreatitis) → K85.80
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) → K85.90
  • SyndromeFitz's → K85.80

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K80-K87 Disorders of gallbladder, biliary tract and pancreas (K80-K87)
  3. K85 Acute pancreatitis
Billable codes
18
Subdivisions
6
CC / MCC codes
0 / 18
HCC V28 codes
0
New FY2027
0
Index entries
32

Codes in K85

  1. K85.0
    Idiopathic acute pancreatitis
    Header
  2. K85.00
    Idiopathic acute pancreatitis without necrosis or infection
    BillableMCC
  3. K85.01
    Idiopathic acute pancreatitis with uninfected necrosis
    BillableMCC
  4. K85.02
    Idiopathic acute pancreatitis with infected necrosis
    BillableMCC
  5. K85.1
    Biliary acute pancreatitis
    Header
    Inclusion terms 1

    Inclusion terms

    • Gallstone pancreatitis
  6. K85.10
    Biliary acute pancreatitis without necrosis or infection
    BillableMCC
  7. K85.11
    Biliary acute pancreatitis with uninfected necrosis
    BillableMCC
  8. K85.12
    Biliary acute pancreatitis with infected necrosis
    BillableMCC
  9. K85.2
    Alcohol induced acute pancreatitis
    Header
    Excludes2 1

    Excludes2

    • alcohol induced chronic pancreatitis (K86.0) K86.0
  10. K85.20
    Alcohol induced acute pancreatitis without necrosis or infection
    BillableMCC
  11. K85.21
    Alcohol induced acute pancreatitis with uninfected necrosis
    BillableMCC
  12. K85.22
    Alcohol induced acute pancreatitis with infected necrosis
    BillableMCC
  13. K85.3
    Drug induced acute pancreatitis
    Header
    Use additional code 2

    Use additional code

    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) T36 T50
    • code to identify drug abuse and dependence (F11.-F17.-) F11 F17
  14. K85.30
    Drug induced acute pancreatitis without necrosis or infection
    BillableMCC
  15. K85.31
    Drug induced acute pancreatitis with uninfected necrosis
    BillableMCC
  16. K85.32
    Drug induced acute pancreatitis with infected necrosis
    BillableMCC
  17. K85.8
    Other acute pancreatitis
    Header
  18. K85.80
    Other acute pancreatitis without necrosis or infection
    BillableMCC
  19. K85.81
    Other acute pancreatitis with uninfected necrosis
    BillableMCC
  20. K85.82
    Other acute pancreatitis with infected necrosis
    BillableMCC
  21. K85.9
    Acute pancreatitis, unspecified
    Header
    Inclusion terms 1

    Inclusion terms

    • Pancreatitis NOS
  22. K85.90
    Acute pancreatitis without necrosis or infection, unspecified
    BillableMCC
  23. K85.91
    Acute pancreatitis with uninfected necrosis, unspecified
    BillableMCC
  24. K85.92
    Acute pancreatitis with infected necrosis, unspecified
    BillableMCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At K85

Includes

  • acute (recurrent) pancreatitis
  • subacute pancreatitis

Notes that also apply

Chapter 11 instructions (Excludes2 8): printed on the chapter 11 page.

Index entries

  • Fitz's syndrome (acute hemorrhagic pancreatitis) → K85.80
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) → K85.90
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)gallstone (without necrosis or infection) → K85.10
  • Suppuration, suppurativepancreas, acute → K85.80
  • SyndromeFitz's → K85.80
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection) → K85.90
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)with necrosis (uninfected) → K85.91
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)idiopathic (without necrosis or infection) → K85.00
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)biliary (without necrosis or infection) → K85.10
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)gallstone (without necrosis or infection) → K85.10
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)gallstone (without necrosis or infection)with necrosis (uninfected) → K85.11
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)alcohol induced (without necrosis or infection) → K85.20
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)drug induced (without necrosis or infection) → K85.30
  • Infection, infected, infective (opportunistic)pancreas (acute)specified NEC → K85.80
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)specified NEC (without necrosis or infection) → K85.80
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)interstitial (chronic)acute → K85.80
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)with necrosis (uninfected) → K85.91
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)with necrosis (uninfected)infected → K85.92
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)idiopathic (without necrosis or infection)with necrosis (uninfected) → K85.01
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)biliary (without necrosis or infection)with necrosis (uninfected) → K85.11
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)gallstone (without necrosis or infection)with necrosis (uninfected) → K85.11
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)gallstone (without necrosis or infection)with necrosis (uninfected)infected → K85.12
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)alcohol induced (without necrosis or infection)with necrosis (uninfected) → K85.21
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)drug induced (without necrosis or infection)with necrosis (uninfected) → K85.31
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)specified NEC (without necrosis or infection)with necrosis (uninfected) → K85.81
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)with necrosis (uninfected)infected → K85.92
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)idiopathic (without necrosis or infection)with necrosis (uninfected)infected → K85.02
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)biliary (without necrosis or infection)with necrosis (uninfected)infected → K85.12
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)gallstone (without necrosis or infection)with necrosis (uninfected)infected → K85.12
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)alcohol induced (without necrosis or infection)with necrosis (uninfected)infected → K85.22
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)drug induced (without necrosis or infection)with necrosis (uninfected)infected → K85.32
  • Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)acute (without necrosis or infection)specified NEC (without necrosis or infection)with necrosis (uninfected)infected → K85.82

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy