S77.10XA — Crushing injury of unspecified thigh, initial encounter
Is S77.10XA billable?
Yes, but S77.10XA will trip a Medicare edit. S77.10XA is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, CMS lists S77.10XA 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.
S77.10XA at a glance
| Code | S77.10XA |
|---|---|
| Description | Crushing injury of unspecified thigh, 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 S77.10XA?
In S77.10XA, the 7th character A means initial encounter. The 7th character is required for S77.10XA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
What Medicare edits apply to S77.10XA?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name S77.10XA 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 S77.10XA group to?
S77.10XA 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, S77.10XA is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG. It also carries Hospital-Acquired Condition category 05.
How is S77.10XA listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S77.1, the nearest indexed parent of S77.10XA. Use them to find the family, then select the specific code.
- Crush, crushed, crushing › thigh
Use additional code — inherited from Chapter 19
Report an additional code alongside S77.10XA to fully describe the condition. S77.10XA is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from S77
Report an additional code alongside S77.10XA to fully describe the condition. S77.10XA is sequenced first.
- code(s) for all associated injuries
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S77.10XA, but a patient may have both at the same time. When documentation supports it, S77.10XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from S70-S79
The conditions below are not part of S77.10XA, but a patient may have both at the same time. When documentation supports it, S77.10XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from S77
The conditions below are not part of S77.10XA, but a patient may have both at the same time. When documentation supports it, S77.10XA and the excluded code may both be reported.
How long has S77.10XA existed?
S77.10XA 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.