DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

K20 Esophagitis

  • Header · not billable

K20 is not billable. The category heads 5 billable codes in FY2027, grouped under 3 subdivisions.

Index → code

  • Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding) → K20.90
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)esophagus → K20.80
  • Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding)eosinophilic → K20.0

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K20-K31 Diseases of esophagus, stomach and duodenum (K20-K31)
  3. K20 Esophagitis
Billable codes
5
Subdivisions
3
CC / MCC codes
0 / 2
HCC V28 codes
0
New FY2027
0
Index entries
6

Codes in K20

  1. K20.0
    Eosinophilic esophagitis
    Billable
  2. K20.8
    Other esophagitis
    Header
  3. K20.80
    Other esophagitis without bleeding
    Billable
    Inclusion terms 2

    Inclusion terms

    • Abscess of esophagus
    • Other esophagitis NOS
  4. K20.81
    Other esophagitis with bleeding
    BillableMCC
  5. K20.9
    Esophagitis, unspecified
    Header
  6. K20.90
    Esophagitis, unspecified without bleeding
    Billable
    Inclusion terms 1

    Inclusion terms

    • Esophagitis NOS
  7. K20.91
    Esophagitis, unspecified with bleeding
    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 K20

Excludes1

  • erosion of esophagus (K22.1-) K22.1
  • esophagitis with gastro-esophageal reflux disease (K21.0-) K21.0
  • reflux esophagitis (K21.0-) K21.0
  • ulcerative esophagitis (K22.1-) K22.1

Excludes2

  • eosinophilic gastritis or gastroenteritis (K52.81) K52.81

Use additional code

  • code to identify:
  • alcohol abuse and dependence (F10.-) F10

Notes that also apply

Block K20-K31 instructions (Excludes2 1): printed on the block page.

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

Index entries

  • Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding) → K20.90
  • Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding)eosinophilic → K20.0
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)esophagus → K20.80
  • Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding)specified NEC (without bleeding) → K20.80
  • Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding)with bleeding → K20.91
  • Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding)specified NEC (without bleeding)with bleeding → K20.81

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

Hierarchy