AutoICD API

T21.40

Non-billable

Corrosion of unspecified degree of trunk, unspecified site

Corrosion of unspecified degree of trunk, unspecified site

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Block

T20-T25

Parent Code

T21.4

Child Codes

3

Coding Notes

Includes

Conditions included under this code

  • 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]
  • burns and corrosion of hip region

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

Excludes 2

Conditions not included here, but the patient may have both

  • burns and corrosion of axilla (T22.- with fifth character 4)
  • burns and corrosion of scapular region (T22.- with fifth character 6)
  • burns and corrosion of shoulder (T22.- with fifth character 5)

Code First

The underlying condition must be sequenced before this code

  • (T51-T65) to identify chemical and intent

Use Additional Code

Additional codes that should follow this code

  • code to identify any retained foreign body, if applicable (Z18.-)
  • code from category T31 or T32 to identify extent of body surface involved
  • external cause code to identify place (Y92)

Child Codes (3)

T21.40XA

Corrosion of unsp degree of trunk, unsp site, init encntr

BillableT21.40XD

Corrosion of unsp degree of trunk, unsp site, subs encntr

BillableT21.40XS

Corrosion of unsp degree of trunk, unspecified site, sequela

Billable

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is the ICD-10 code for corrosion of unspecified degree of trunk, unspecified site?

The ICD-10-CM code for corrosion of unspecified degree of trunk, unspecified site is T21.40. The full clinical description is "Corrosion of unspecified degree of trunk, unspecified site". T21.40 is a non-billable header code. Use a more specific child code for billing purposes.

What does ICD-10 code T21.40 mean?

ICD-10-CM code T21.40 represents "Corrosion of unspecified degree of trunk, unspecified site". It is classified under Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes and is a non-billable header code. Use a more specific child code for billing purposes.

Is T21.40 a billable code?

No, T21.40 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under T21.40.

What chapter is T21.40 in?

T21.40 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).

What codes cannot be used with T21.40?

T21.40 has Excludes1 notes indicating codes that cannot be used together with it, including: birth trauma (P10-P15); obstetric trauma (O70-O71).

What are the subcategories under T21.40?

T21.40 has 3 child codes, including: T21.40XA (Corrosion of unsp degree of trunk, unsp site, init encntr), T21.40XD (Corrosion of unsp degree of trunk, unsp site, subs encntr), T21.40XS (Corrosion of unsp degree of trunk, unspecified site, sequela).

Are additional codes required with T21.40?

Yes, when using T21.40 you should also code: code to identify any retained foreign body, if applicable (Z18.-); code from category T31 or T32 to identify extent of body surface involved; external cause code to identify place (Y92).

What are the UMLS CUIs for T21.40?

T21.40 is linked to 1 UMLS Concept Unique Identifier: C2870864. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.