T84.129S — Displacement of internal fixation device of unspecified bone of limb, sequela

BillableUnspecified

Is T84.129S billable?

Yes, but T84.129S is an unspecified code. T84.129S is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T84.129S is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting T84.129S — the more specific alternatives are listed below.

More specific alternatives

T84.129S at a glance

Code	T84.129S
Description	Displacement of internal fixation device of unspecified bone of limb, sequela
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027
7th character "S"	sequela

What does the 7th character "S" mean in T84.129S?

In T84.129S, the 7th character S means sequela. The 7th character is required for T84.129S to be a valid, complete code.

Same condition, different episode of care — switch the 7th character:

Which MS-DRGs does T84.129S group to?

T84.129S sits in MDC 21 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

922Other Injury, Poisoning and Toxic Effect Diagnoses with MCCmedical
923Other Injury, Poisoning and Toxic Effect Diagnoses without MCCmedical

How is T84.129S listed in the Alphabetic Index?

The Alphabetic Index lists these routes under T84.129, the nearest indexed parent of T84.129S. Use them to find the family, then select the specific code.

Complication › fixation device, internal › mechanical › displacement › limb (s) (from) (of)

Use additional code — inherited from Chapter 19

Report an additional code alongside T84.129S to fully describe the condition. T84.129S is sequenced first.

code to identify any retained foreign body, if applicable (Z18.-)

Use additional code — inherited from T80-T88

Report an additional code alongside T84.129S to fully describe the condition. T84.129S is sequenced first.

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
code(s) to identify the specified condition resulting from the complication
code to identify devices involved and details of circumstances (Y62-Y82)

Excludes2 — not included here — inherited from Chapter 19

The conditions below are not part of T84.129S, but a patient may have both at the same time. When documentation supports it, T84.129S and the excluded code may both be reported.

birth trauma (P10-P15)
obstetric trauma (O70-O71)

Excludes2 — not included here — inherited from T80-T88

The conditions below are not part of T84.129S, but a patient may have both at the same time. When documentation supports it, T84.129S and the excluded code may both be reported.

any encounters with medical care for postprocedural conditions in which no complications are present, such as:
artificial opening status (Z93.-)
closure of external stoma (Z43.-)
fitting and adjustment of external prosthetic device (Z44.-)
burns and corrosions from local applications and irradiation (T20-T32)
complications of surgical procedures during pregnancy, childbirth and the puerperium (O00-O9A)
mechanical complication of respirator [ventilator] (J95.850)
poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4 or 6)
postprocedural fever (R50.82)
specified complications classified elsewhere, such as:
cerebrospinal fluid leak from spinal puncture (G97.0)
colostomy malfunction (K94.0-)
disorders of fluid and electrolyte imbalance (E86-E87)
functional disturbances following cardiac surgery (I97.0-I97.1)
intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-)
ostomy complications (J95.0-, K94.-, N99.5-)
postgastric surgery syndromes (K91.1)
postlaminectomy syndrome NEC (M96.1)
postmastectomy lymphedema syndrome (I97.2)
postsurgical blind-loop syndrome (K91.2)
ventilator associated pneumonia (J95.851)

Excludes2 — not included here — inherited from T84

The conditions below are not part of T84.129S, but a patient may have both at the same time. When documentation supports it, T84.129S and the excluded code may both be reported.

failure and rejection of transplanted organs and tissues (T86.-)
fracture of bone following insertion of orthopedic implant, joint prosthesis or bone plate (M96.6)

Excludes2 — not included here — inherited from T84.1

The conditions below are not part of T84.129S, but a patient may have both at the same time. When documentation supports it, T84.129S and the excluded code may both be reported.

mechanical complication of internal fixation device of bones of feet (T84.2-)
mechanical complication of internal fixation device of bones of fingers (T84.2-)
mechanical complication of internal fixation device of bones of hands (T84.2-)
mechanical complication of internal fixation device of bones of toes (T84.2-)

How long has T84.129S existed?

T84.129S has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.