ICD-10-CM 2027 diagnosis code
T84.031Mechanical loosening of internal left hip prosthetic joint
T84.031 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 T84.031
T84.031 is the ICD-10-CM diagnosis code for mechanical loosening of internal left hip prosthetic joint. 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 T84.03 (mechanical loosening of internal prosthetic joint), T84.031 is specifically for mechanical loosening of internal left hip prosthetic joint. Related codes cover internal right hip prosthetic joint (T84.030), internal right knee prosthetic joint (T84.032), internal left knee prosthetic joint (T84.033), other internal prosthetic joint (T84.038) and unspecified internal prosthetic joint (T84.039).
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 T84.031.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about T84.031
Is T84.031 billable?
- No. T84.031 is a header code. Report one of its more specific subcodes instead.