T20Not billable, use a more specific code below

Burn and corrosion of head, face, and neck

In Burns and corrosions of external body surface, specified by site (T20-T25), chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes

264 billable codes under T20: 22 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

Advertisements

Instructional notes

Excludes2: not included here, code separately if applicable

  • burn and corrosion of ear drum (T28.41, T28.91)
  • burn and corrosion of eye and adnexa (T26.-)
  • burn and corrosion of mouth and pharynx (T28.0)

Also applies, from Burns and corrosions of external body surface, specified by site (T20-T25)

These notes sit on T20-T25 and apply to every code under it, including T20.

Includes: conditions that are coded here

  • burns and corrosions of first degree [erythema]
  • burns and corrosions of second degree [blisters][epidermal loss]
  • burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]

Use additional code: add a second code for this, listed after this one

  • code from category T31 or T32 to identify extent of body surface involved

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

  • Section I.C.19.d Coding of Burns and Corrosions (page 80), covers T20

    Sequence the highest degree burn first and code each site separately, using the highest degree for one site. Code non-healing burns as acute, add codes for infection, and add an external cause code for source, intent, and place.

Other Chapter 19 topics:

Read Section I.C.19 (page 77)

All codes under T20

T20 can't be used on a claim. Pick a billable code below; grey headings group them.

T20 MS-DRGs

As the principal diagnosis, the billable codes under T20 group to MS-DRG 604, 605, 949, 950, or 935 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to T20

Notes on these codes point to T20.

  • S00-S09 Excludes2: burns and corrosions (T20-T32)
  • S10-S19 Excludes2: burns and corrosions (T20-T32)
  • S20-S29 Excludes2: burns and corrosions (T20-T32)
  • S30-S39 Excludes2: burns and corrosions (T20-T32)
  • S40-S49 Excludes2: burns and corrosions (T20-T32)
  • S50-S59 Excludes2: burns and corrosions (T20-T32)
  • S60-S69 Excludes2: burns and corrosions (T20-T32)
  • S70-S79 Excludes2: burns and corrosions (T20-T32)
  • S80-S89 Excludes2: burns and corrosions (T20-T32)
  • S90-S99 Excludes2: burns and corrosions (T20-T32)
  • T66 Excludes1: burns (T20-T31)
  • T67 Excludes2: burns (T20-T31)
  • T75 Excludes2: burns (electric) (T20-T31)
  • T80-T88 Excludes2: burns and corrosions from local applications and irradiation (T20-T32)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Burns

A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

Read more about burns on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.