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ICD-10-CM 2027 diagnosis code

L50Urticaria

Not billable — use a more specific code

L50 is a header code, so it can't be reported by itself. Choose one of the 9 more specific codes beneath it.

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 L50

L50 is the ICD-10-CM diagnosis code for urticaria. It belongs to block L49-L54 (urticaria and erythema) and chapter 12 (diseases of the skin and subcutaneous tissue). It is a header code, so it can't be reported by itself; one of its 9 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: L50.0 (urticaria), L50.1 (urticaria), L50.2 (due to cold and heat), L50.3 (urticaria), L50.4 (urticaria), L50.5 (urticaria), L50.6 (urticaria), L50.8 (urticaria) and 1 more.

Don't report L50 together with the conditions in its Excludes1 note: allergic contact dermatitis (L23.-), angioneurotic edema (T78.3), giant urticaria (T78.3), hereditary angio-edema (D84.1) and 6 more.

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

Specific codes under L50

Coding notes

Excludes1Not coded here — never report together with this code
  • allergic contact dermatitis (L23.-)
  • angioneurotic edema (T78.3)
  • giant urticaria (T78.3)
  • hereditary angio-edema (D84.1)
  • Quincke's edema (T78.3)
  • serum urticaria (T80.6-)
  • solar urticaria (L56.3)
  • urticaria neonatorum (P83.8)
  • urticaria papulosa (L28.2)
  • urticaria pigmentosa (D47.01)

Notes that apply from higher levels

Instructions written at a parent level also apply to L50.

Broader instructions also apply from L49-L54 Urticaria and erythema and Chapter 12: Diseases of the skin and subcutaneous tissue.

Codes whose notes reference L50

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 L50

Is L50 billable?

No. L50 is a header code. Report one of its more specific subcodes instead.