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ICD-10-CM 2027 diagnosis code

T22.46Corrosion of unspecified degree of scapular region

Not billable — use a more specific codeRequires 7th character

T22.46 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About T22.46

T22.46 is the ICD-10-CM diagnosis code for corrosion of unspecified degree of scapular region. It belongs to category T22 (burn and corrosion of shoulder and upper limb, except wrist and hand), block T20-T25 (burns and corrosions of external body surface, specified by site) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within T22.4 (corrosion of unspecified degree of shoulder and upper limb, except wrist and hand), T22.46 is specifically for corrosion of unspecified degree of scapular region. Related codes cover unspecified site (T22.40), forearm (T22.41), elbow (T22.42), upper arm (T22.43), axilla (T22.44), shoulder (T22.45) and multiple sites of shoulder and upper limb, except wrist and hand (T22.49).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The appropriate 7th character is to be added to each code from category T22

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Notes that apply from higher levels

Instructions written at a parent level also apply to T22.46.

› From T22.4 Corrosion of unspecified degree of shoulder and upper limb, except wrist and hand
Code first
  • (T51-T65) to identify chemical and intent
Use additional code
  • external cause code to identify place (Y92)
› From T22 Burn and corrosion of shoulder and upper limb, except wrist and hand
Excludes2
  • burn and corrosion of interscapular region (T21.-)
  • burn and corrosion of wrist and hand (T23.-)

Broader instructions also apply from T20-T25 Burns and corrosions of external body surface, specified by site and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about T22.46

Is T22.46 billable?

No. T22.46 is a header code. Report one of its more specific subcodes instead.