DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

X03 Exposure to controlled fire, not in building or structure

  • Header · not billable
  • Codes take a 7th character

X03 is not billable. The category heads 15 billable codes in FY2027, grouped under 5 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Where it sits

  1. Chapter 20 External causes of morbidity (V00-Y99)
  2. X00-X08 Exposure to smoke, fire and flames (X00-X08)
  3. X03 Exposure to controlled fire, not in building or structure
Billable codes
15
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
0

Codes in X03

  1. X03.0
    Exposure to flames in controlled fire, not in building or structure +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  2. X03.1
    Exposure to smoke in controlled fire, not in building or structure +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  3. X03.3
    Fall due to controlled fire, not in building or structure +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  4. X03.4
    Hit by object due to controlled fire, not in building or structure +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  5. X03.8
    Other exposure to controlled fire, not in building or structure +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters

Sources of each column. Rows marked +7th need a 7th character: pick one to build the full code; its code card has its own flags.

Instructions

At X03

Includes

  • exposure to bon fire
  • exposure to camp-fire
  • exposure to trash fire

Notes that also apply

Block X00-X08 instructions (Excludes1 1, Excludes2 3): printed on the block page.

Chapter 20 instructions (Notes 1): printed on the chapter 20 page.

7th characters

7th characters for X03 defined here

The appropriate 7th character is to be added to each code from category X03

7th characters for X03
7thMeaning (NCHS)
Ainitial encounter
Dsubsequent encounter
Ssequela

A code that takes a 7th character is invalid without it; the placeholder X fills a code shorter than 6 characters (Official Guidelines I.A.5). How 7th characters work.

Hierarchy