S75.999A — Other specified injury of unspecified blood vessel at hip and thigh level, unspecified leg, initial encounter
Is S75.999A billable?
Yes, but S75.999A will trip a Medicare edit. S75.999A is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, CMS lists S75.999A under Medicare Code Editor edit 20, “Unspecified code” — meaning a code specifying laterality (right, left or bilateral) exists in the same family. On an inpatient claim this triggers the edit, because CMS holds that there are very limited circumstances in which laterality cannot be documented.
More specific alternatives
- S75.001AUnspecified injury of femoral artery, right leg, initial encounter
- S75.101AUnspecified injury of femoral vein at hip and thigh level, right leg, initial encounter
- S75.201AUnspecified injury of greater saphenous vein at hip and thigh level, right leg, initial encounter
- S75.801AUnspecified injury of other blood vessels at hip and thigh level, right leg, initial encounter
S75.999A at a glance
| Code | S75.999A |
|---|---|
| Description | Other specified injury of unspecified blood vessel at hip and thigh level, unspecified leg, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in S75.999A?
In S75.999A, the 7th character A means initial encounter. The 7th character is required for S75.999A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
What Medicare edits apply to S75.999A?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name S75.999A directly.
A code specifying laterality (right, left or bilateral) exists in the same family. CMS holds that there are very limited circumstances in which laterality cannot be documented.
Which MS-DRGs does S75.999A group to?
S75.999A 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.
- 913Traumatic Injury with MCCmedical
- 914Traumatic Injury without MCCmedical
As a secondary diagnosis, S75.999A is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is S75.999A listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S75.99, the nearest indexed parent of S75.999A. Use them to find the family, then select the specific code.
- Injury › blood vessel NEC › hip › specified › type NEC
Use additional code — inherited from Chapter 19
Report an additional code alongside S75.999A to fully describe the condition. S75.999A 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 S75.999A, but a patient may have both at the same time. When documentation supports it, S75.999A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S70-S79
The conditions below are not part of S75.999A, but a patient may have both at the same time. When documentation supports it, S75.999A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S75
The conditions below are not part of S75.999A, but a patient may have both at the same time. When documentation supports it, S75.999A and the excluded code may both be reported.
Code also — inherited from S75
Two codes may be needed to describe the condition fully. Whether S75.999A is sequenced first depends on the reason for the encounter.
- any associated open wound (S71.-)
How long has S75.999A existed?
S75.999A 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.