DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

X16 Contact with hot heating appliances, radiators and pipes

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

X16 is not billable. The category heads 3 billable codes in FY2027. 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. X10-X19 Contact with heat and hot substances (X10-X19)
  3. X16 Contact with hot heating appliances, radiators and pipes
Billable codes
3
Subdivisions
0
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
0

Codes in X16

  1. X16.XXXA
    Contact with hot heating appliances, radiators and pipes, initial encounter
    Billable
  2. X16.XXXD
    Contact with hot heating appliances, radiators and pipes, subsequent encounter
    Billable
  3. X16.XXXS
    Contact with hot heating appliances, radiators and pipes, sequela
    Billable

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 X16

Excludes1

  • contact with powered appliances (W29.-) W29
  • exposure to controlled fire in building or structure due to appliance (X02.8) X02.8
  • exposure to industrial appliances electrical current (W86.1) W86.1

Notes that also apply

Block X10-X19 instructions (Excludes1 2): printed on the block page.

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

7th characters

7th characters for X16 defined here

The appropriate 7th character is to be added to code X16

7th characters for X16
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