S93.421S — Sprain of deltoid ligament of right ankle, sequela
Is S93.421S billable?
Yes — S93.421S is billable for FY2027. S93.421S is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S93.421S may be submitted for encounters from October 1, 2026 through September 30, 2027.
S93.421S at a glance
| Code | S93.421S |
|---|---|
| Description | Sprain of deltoid ligament of right ankle, 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 S93.421S?
In S93.421S, the 7th character S means sequela. The 7th character is required for S93.421S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S93.421S group to?
S93.421S sits in MDC 08 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.
- 562Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh with MCCmedical
- 563Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh without MCCmedical
How is S93.421S listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S93.42, the nearest indexed parent of S93.421S. Use them to find the family, then select the specific code.
- Sprain › ankle › deltoid ligament (joint) (ligament)
Use additional code — inherited from Chapter 19
Report an additional code alongside S93.421S to fully describe the condition. S93.421S 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 S93.421S, but a patient may have both at the same time. When documentation supports it, S93.421S and the excluded code may both be reported.
Excludes2 — not included here — inherited from S90-S99
The conditions below are not part of S93.421S, but a patient may have both at the same time. When documentation supports it, S93.421S and the excluded code may both be reported.
Excludes2 — not included here — inherited from S93
The conditions below are not part of S93.421S, but a patient may have both at the same time. When documentation supports it, S93.421S and the excluded code may both be reported.
- strain of muscle and tendon of ankle and foot (S96.-)
Excludes2 — not included here — inherited from S93.4
The conditions below are not part of S93.421S, but a patient may have both at the same time. When documentation supports it, S93.421S and the excluded code may both be reported.
- injury of Achilles tendon (S86.0-)
Code also — inherited from S93
Two codes may be needed to describe the condition fully. Whether S93.421S is sequenced first depends on the reason for the encounter.
- any associated open wound
How long has S93.421S existed?
S93.421S 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.