S55.999 — Other specified injury of unspecified blood vessel at forearm level, unspecified arm
Is S55.999 billable?
No — S55.999 is a non-billable header code. S55.999 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath S55.999.
Billable codes under this header
- S55.999AOther specified injury of unspecified blood vessel at forearm level, unspecified arm, initial encounter
- S55.999DOther specified injury of unspecified blood vessel at forearm level, unspecified arm, subsequent encounter
- S55.999SOther specified injury of unspecified blood vessel at forearm level, unspecified arm, sequela
S55.999 at a glance
| Code | S55.999 |
|---|---|
| Description | Other specified injury of unspecified blood vessel at forearm level, unspecified arm |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is S55.999 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S55.99, the nearest indexed parent of S55.999. Use them to find the family, then select the specific code.
- Injury › blood vessel NEC › forearm › specified › type NEC
Use additional code — inherited from Chapter 19
Report an additional code alongside S55.999 to fully describe the condition. S55.999 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 S55.999, but a patient may have both at the same time. When documentation supports it, S55.999 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S50-S59
The conditions below are not part of S55.999, but a patient may have both at the same time. When documentation supports it, S55.999 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S55
The conditions below are not part of S55.999, but a patient may have both at the same time. When documentation supports it, S55.999 and the excluded code may both be reported.
Code also — inherited from S55
Two codes may be needed to describe the condition fully. Whether S55.999 is sequenced first depends on the reason for the encounter.
- any associated open wound (S51.-)
What codes fall under S55.999? (3)
- S55.999AOther specified injury of unspecified blood vessel at forearm level, unspecified arm, initial encounter
- S55.999DOther specified injury of unspecified blood vessel at forearm level, unspecified arm, subsequent encounter
- S55.999SOther specified injury of unspecified blood vessel at forearm level, unspecified arm, sequela
How long has S55.999 existed?
S55.999 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.