DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

K29 Gastritis and duodenitis

  • Header · not billable

K29 is not billable. The category heads 18 billable codes in FY2027, grouped under 9 subdivisions.

Index → code

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. K29 Gastritis and duodenitis
Billable codes
18
Subdivisions
9
CC / MCC codes
0 / 9
HCC V28 codes
0
New FY2027
0
Index entries
47

Codes in K29

  1. K29.0
    Acute gastritis
    Header
    Excludes1 1, Use additional code 2

    Excludes1

    • erosion (acute) of stomach (K25.-) K25

    Use additional code

    • code to identify:
    • alcohol abuse and dependence (F10.-) F10
  2. K29.00
    Acute gastritis without bleeding
    Billable
  3. K29.01
    Acute gastritis with bleeding
    BillableMCC
  4. K29.2
    Alcoholic gastritis
    Header
    Use additional code 2

    Use additional code

    • code to identify:
    • alcohol abuse and dependence (F10.-) F10
  5. K29.20
    Alcoholic gastritis without bleeding
    Billable
  6. K29.21
    Alcoholic gastritis with bleeding
    BillableMCC
  7. K29.3
    Chronic superficial gastritis
    Header
  8. K29.30
    Chronic superficial gastritis without bleeding
    Billable
  9. K29.31
    Chronic superficial gastritis with bleeding
    BillableMCC
  10. K29.4
    Chronic atrophic gastritis
    Header
    Inclusion terms 1

    Inclusion terms

    • Gastric atrophy
  11. K29.40
    Chronic atrophic gastritis without bleeding
    Billable
  12. K29.41
    Chronic atrophic gastritis with bleeding
    BillableMCC
  13. K29.5
    Unspecified chronic gastritis
    Header
    Inclusion terms 2

    Inclusion terms

    • Chronic antral gastritis
    • Chronic fundal gastritis
  14. K29.50
    Unspecified chronic gastritis without bleeding
    Billable
  15. K29.51
    Unspecified chronic gastritis with bleeding
    BillableMCC
  16. K29.6
    Other gastritis
    Header
    Inclusion terms 3

    Inclusion terms

    • Giant hypertrophic gastritis
    • Granulomatous gastritis
    • Ménétrier's disease
  17. K29.60
    Other gastritis without bleeding
    Billable
  18. K29.61
    Other gastritis with bleeding
    BillableMCC
  19. K29.7
    Gastritis, unspecified
    Header
  20. K29.70
    Gastritis, unspecified, without bleeding
    Billable
  21. K29.71
    Gastritis, unspecified, with bleeding
    BillableMCC
  22. K29.8
    Duodenitis
    Header
  23. K29.80
    Duodenitis without bleeding
    Billable
  24. K29.81
    Duodenitis with bleeding
    BillableMCC
  25. K29.9
    Gastroduodenitis, unspecified
    Header
  26. K29.90
    Gastroduodenitis, unspecified, without bleeding
    Billable
  27. K29.91
    Gastroduodenitis, 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 K29

Excludes1

  • eosinophilic gastritis or gastroenteritis (K52.81) K52.81
  • Zollinger-Ellison syndrome (E16.4) E16.4

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

  • Ménétrier's disease or syndrome → K29.60
  • Gastritis (simple) → K29.70
  • Duodenitis (nonspecific) (peptic) → K29.80
  • Gastroduodenitis → K29.90
  • Pyloritis → K29.90
  • Gastritis (simple)acute (erosive) → K29.00
  • Gastritis (simple)alcoholic → K29.20
  • Gastritis (simple)superficial chronic → K29.30
  • Atrophy, atrophic (of)gastric → K29.40
  • Atrophy, atrophic (of)stomach → K29.40
  • Gastritis (simple)atrophic (chronic) → K29.40
  • Antritisstomach → K29.50
  • Gastritis (simple)chronic (antral) (fundal) → K29.50
  • Gastritis (simple)allergic → K29.60
  • Gastritis (simple)giant hypertrophic → K29.60
  • Gastritis (simple)granulomatous → K29.60
  • Gastritis (simple)hypertrophic (mucosa) → K29.60
  • Gastritis (simple)spastic → K29.60
  • Gastritis (simple)specified NEC → K29.60
  • Hypertrophy, hypertrophicgastric mucosa → K29.60
  • Ménétrier's disease or syndromewith bleeding → K29.61
  • Gastropathyerythematous → K29.70
  • Gastritis (simple)with bleeding → K29.71
  • Inflammation, inflamed, inflammatory (with exudation)duodenum → K29.80
  • Duodenitis (nonspecific) (peptic)with bleeding → K29.81
  • Gastroduodenitiswith bleeding → K29.91
  • Pyloritiswith bleeding → K29.91
  • Gastritis (simple)acute (erosive)with bleeding → K29.01
  • Gastritis (simple)alcoholicwith bleeding → K29.21
  • Gastritis (simple)chronic (antral) (fundal)superficial → K29.30
  • Gastritis (simple)superficial chronicwith bleeding → K29.31
  • Gastritis (simple)chronic (antral) (fundal)atrophic → K29.40
  • Atrophy, atrophic (of)gastricwith bleeding → K29.41
  • Atrophy, atrophic (of)stomachwith bleeding → K29.41
  • Gastritis (simple)atrophic (chronic)with bleeding → K29.41
  • Antritisstomachwith bleeding → K29.51
  • Gastritis (simple)chronic (antral) (fundal)with bleeding → K29.51
  • Gastritis (simple)allergicwith bleeding → K29.61
  • Gastritis (simple)giant hypertrophicwith bleeding → K29.61
  • Gastritis (simple)granulomatouswith bleeding → K29.61

7 more, longer entries are not listed; the search box finds them by word.

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

Hierarchy