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ICD-10-CM 2027 diagnosis code

T84.021Dislocation of internal left hip prosthesis

Not billable — use a more specific codeRequires 7th character

T84.021 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 T84.021

T84.021 is the ICD-10-CM diagnosis code for dislocation of internal left hip prosthesis. It belongs to category T84 (complications of internal orthopedic prosthetic devices, implants and grafts), block T80-T88 (complications of surgical and medical care, not elsewhere classified) 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 T84.02 (dislocation of internal joint prosthesis), T84.021 is specifically for dislocation of internal left hip prosthesis. Related codes cover dislocation of internal right hip prosthesis (T84.020), instability of internal right knee prosthesis (T84.022), instability of internal left knee prosthesis (T84.023), dislocation of other internal joint prosthesis (T84.028) and dislocation of unspecified internal joint prosthesis (T84.029).

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 T84

Notes that apply from higher levels

Instructions written at a parent level also apply to T84.021.

› From T84 Complications of internal orthopedic prosthetic devices, implants and grafts
Excludes2
  • failure and rejection of transplanted organs and tissues (T86.-)
  • fracture of bone following insertion of orthopedic implant, joint prosthesis or bone plate (M96.6)

Broader instructions also apply from T80-T88 Complications of surgical and medical care, not elsewhere classified and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Codes whose notes reference T84.021

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 T84.021

Is T84.021 billable?

No. T84.021 is a header code. Report one of its more specific subcodes instead.