DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

E73 Lactose intolerance

  • Header · not billable

E73 is not billable. The category heads 4 billable codes in FY2027: the 4 codes directly below it.

Index → code

  • Alactasia, congenital → E73.0
  • Intolerancelactose → E73.9
  • Malabsorptionlactose → E73.9

Where it sits

  1. Chapter 4 Endocrine, nutritional and metabolic diseases (E00-E89)
  2. E70-E88 Metabolic disorders (E70-E88)
  3. E73 Lactose intolerance
Billable codes
4
Subdivisions
4
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
10

Codes in E73

  1. E73.0
    Congenital lactase deficiency
    Billable
  2. E73.1
    Secondary lactase deficiency
    Billable
  3. E73.8
    Other lactose intolerance
    Billable
  4. E73.9
    Lactose intolerance, unspecified
    Billable

Sources of each column.

Instructions

Notes that also apply

Block E70-E88 instructions (Excludes1 5, Excludes2 1): printed on the block page.

Chapter 4 instructions (Notes 1, Excludes1 1): printed on the chapter 4 page.

Index entries

  • Alactasia, congenital → E73.0
  • Intolerancedisaccharide, hereditary → E73.0
  • Deficiency, deficientdisaccharidase → E73.9
  • Intolerancelactose → E73.9
  • Malabsorptiondisaccharide → E73.9
  • Malabsorptionlactose → E73.9
  • Deficiency, deficientlactasecongenital → E73.0
  • Deficiency, deficientlactasesecondary → E73.1
  • Intolerancelactosespecified NEC → E73.8
  • Intolerancemilk NEClactose → E73.9

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

Hierarchy