DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

T69 Other effects of reduced temperature

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

T69 is not billable. The category heads 27 billable codes in FY2027, grouped under 4 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Index → code

Where it sits

  1. Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
  2. T66-T78 Other and unspecified effects of external causes (T66-T78)
  3. T69 Other effects of reduced temperature
Billable codes
27
Subdivisions
4
CC / MCC codes
3 / 0
HCC V28 codes
0
New FY2027
0
Index entries
35

Codes in T69

  1. T69.0
    Immersion hand and foot
    Header
  2. T69.01
    Immersion hand
    Header
  3. T69.011
    Immersion hand, right hand +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  4. T69.012
    Immersion hand, left hand +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  5. T69.019
    Immersion hand, unspecified hand +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  6. T69.02
    Immersion foot
    Header
    Inclusion terms 1

    Inclusion terms

    • Trench foot
  7. T69.021
    Immersion foot, right foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  8. T69.022
    Immersion foot, left foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  9. T69.029
    Immersion foot, unspecified foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  10. T69.1
    Chilblains +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  11. T69.8
    Other specified effects of reduced temperature +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  12. T69.9
    Effect of reduced temperature, unspecified +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters

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

Instructions

At T69

Excludes2

Use additional code

  • code to identify source of exposure:
  • Exposure to excessive cold of man-made origin (W93) W93
  • Exposure to excessive cold of natural origin (X31) X31

Notes that also apply

Block T66-T78 instructions (Code also 6): printed on the block page.

Chapter 19 instructions (Notes 2, Excludes2 2, Use additional code 1): printed on the chapter 19 page.

7th characters

7th characters for T69 defined here

The appropriate 7th character is to be added to each code from category T69

7th characters for T69
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.

Index entries

  • Maceration, wet feet, tropical (syndrome) → T69.02-
  • Chilblain(s) (lupus) → T69.1
  • Pernio, perniosis → T69.1
  • Chapping skin → T69.8
  • Congelation → T69.9
  • Freezing → T69.9
  • Frozen → T69.9
  • Immersionhand → T69.01-
  • Immersionfoot → T69.02-
  • Stasisfoot → T69.02-
  • Syndrometropical wet feet → T69.02-
  • Dermatitis (eczematous)congelationis → T69.1
  • Erythema, erythematous (infectional) (inflammation)pernio → T69.1
  • Coldexhaustion from → T69.8
  • Coldeffects of → T69.9
  • Coldexcessive, effects of → T69.9
  • Coldexposure to → T69.9
  • Effect, adversecold (temperature) (weather) → T69.9
  • Effect, adversereduced temperature → T69.9
  • Excess, excessive, excessivelycold, effects of → T69.9
  • Exposure (to)cold, effects of → T69.9
  • Temperaturecold, trauma from → T69.9
  • Syndromewetfeet (maceration) (tropical) → T69.02-
  • Effect, adversecold (temperature) (weather)chilblains → T69.1
  • Coldeffects ofspecified effect NEC → T69.8
  • Coldexcessive, effects ofspecified effect NEC → T69.8
  • Coldexposure tospecified effect NEC → T69.8
  • Effect, adversecold (temperature) (weather)specified effect NEC → T69.8
  • Effect, adversereduced temperaturespecified effect NEC → T69.8
  • Excess, excessive, excessivelycold, effects ofspecified effect NEC → T69.8
  • Exhaustion, exhaustive (physical NEC)due tocold → T69.8
  • Exposure (to)cold, effects ofspecified effect NEC → T69.8
  • Temperaturecold, trauma fromspecified effect NEC → T69.8
  • Weather, weatheredeffects ofcold → T69.9
  • Weather, weatheredeffects ofcoldspecified effect NEC → T69.8

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

Hierarchy