ICD-10 Code for Pancreatitis

The default ICD-10-CM 2027 code for pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) is K85.90 – Acute pancreatitis without necrosis or infection, unspecified. More specific codes depend on the details documented, as listed in the official index (23 codes, 23 billable).

Main code: K85.90 – Acute pancreatitis without necrosis or infection, unspecified
Billable: Yes

Index entries for Pancreatitis

with necrosis (uninfected) – K85.91
- infected – K85.92
acute (without necrosis or infection) – K85.90
- with necrosis (uninfected) – K85.91
  - infected – K85.92
- alcohol induced (without necrosis or infection) – K85.20
  - with necrosis (uninfected) – K85.21
    - infected – K85.22
- biliary (without necrosis or infection) – K85.10
  - with necrosis (uninfected) – K85.11
    - infected – K85.12
- drug induced (without necrosis or infection) – K85.30
  - with necrosis (uninfected) – K85.31
    - infected – K85.32
- gallstone (without necrosis or infection) – K85.10
  - with necrosis (uninfected) – K85.11
    - infected – K85.12
- idiopathic (without necrosis or infection) – K85.00
  - with necrosis (uninfected) – K85.01
    - infected – K85.02
- specified NEC (without necrosis or infection) – K85.80
  - with necrosis (uninfected) – K85.81
    - infected – K85.82
chronic (infectious) – K86.1
- alcohol-induced – K86.0
- recurrent – K86.1
- relapsing – K86.1
cystic (chronic) – K86.1
cytomegaloviral – B25.2
fibrous (chronic) – K86.1
gangrenous – see Pancreatitis, acute
gallstone (without necrosis or infection) – K85.10
- with necrosis (uninfected) – K85.11
  - infected – K85.12
interstitial (chronic) – K86.1
- acute – K85.80 – see also Pancreatitis, acute
mumps – B26.3
recurrent
- acute – see Pancreatitis, acute by type
- chronic – K86.1
relapsing, chronic – K86.1
syphilitic – A52.74

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.