S88.021D — Partial traumatic amputation at knee level, right lower leg, subsequent encounter
Is S88.021D billable?
Yes — S88.021D is billable for FY2027. S88.021D is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S88.021D may be submitted for encounters from October 1, 2026 through September 30, 2027.
S88.021D at a glance
| Code | S88.021D |
|---|---|
| Description | Partial traumatic amputation at knee level, right lower leg, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in S88.021D?
In S88.021D, the 7th character D means subsequent encounter. The 7th character is required for S88.021D to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S88.021D group to?
S88.021D sits in MDC 23 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.
- 949Aftercare with CC/MCCmedical
- 950Aftercare without CC/MCCmedical
How is S88.021D listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S88.02, the nearest indexed parent of S88.021D. Use them to find the family, then select the specific code.
- Amputation › traumatic › leg › at knee level › partial
Excludes1 — never code together — inherited from S88
The conditions below can never be reported together with S88.021D on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- traumatic amputation of ankle and foot (S98.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside S88.021D to fully describe the condition. S88.021D is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S88.021D, but a patient may have both at the same time. When documentation supports it, S88.021D and the excluded code may both be reported.
Excludes2 — not included here — inherited from S80-S89
The conditions below are not part of S88.021D, but a patient may have both at the same time. When documentation supports it, S88.021D and the excluded code may both be reported.
How long has S88.021D existed?
S88.021D 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.