T84.199
Other mechanical complication of internal fixation device of unspecified bone of limb
Not billable — category only FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 8 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 8 never code together
T84code
T84.1code
Excludes2
- mechanical complication of internal fixation device of bones of feet (T84.2-)T84.2-
- mechanical complication of internal fixation device of bones of fingers (T84.2-)T84.2-
- mechanical complication of internal fixation device of bones of hands (T84.2-)T84.2-
- mechanical complication of internal fixation device of bones of toes (T84.2-)T84.2-
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 3
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 1
Alongside this code 8 same parent — T84.19
T84.190 Mech compl of internal fixation device of right humerus category T84.191 Mech compl of internal fixation device of left humerus category T84.192 Mech compl of int fix of bone of right forearm category T84.193 Mech compl of int fix of bone of left forearm category T84.194 Mech compl of internal fixation device of right femur category T84.195 Mech compl of internal fixation device of left femur category T84.196 Mech compl of int fix of bone of right lower leg category T84.197 Mech compl of int fix of bone of left lower leg category
Subordinate codes 3
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.