S25.899A Other specified injury of other blood vessels of thorax, unspecified side, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S25.899 with 7th character A (initial encounter).

Applies from S25 Injury of blood vessels of thorax

Code also

• any associated open wound (S21.-)

7th character note

• The appropriate 7th character is to be added to each code from category S25

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from S25.8 Injury of other blood vessels of thorax

Applicable to

• Injury of azygos vein
• Injury of mammary artery or vein

Medicare Code Edits (MCE v43.1 (April 2026))

• Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.

Nearby codes

• S25.892 Other specified injury of other blood vessels of thorax, left side
• S25.892A Other specified injury of other blood vessels of thorax, left side, initial encounter
• S25.892D Other specified injury of other blood vessels of thorax, left side, subsequent encounter
• S25.892S Other specified injury of other blood vessels of thorax, left side, sequela
• S25.899 Other specified injury of other blood vessels of thorax, unspecified side
• S25.899A Other specified injury of other blood vessels of thorax, unspecified side, initial encounter (this code)
• S25.899D Other specified injury of other blood vessels of thorax, unspecified side, subsequent encounter
• S25.899S Other specified injury of other blood vessels of thorax, unspecified side, sequela
• S25.9 Injury of unspecified blood vessel of thorax
• S25.90 Unspecified injury of unspecified blood vessel of thorax
• S25.90XA Unspecified injury of unspecified blood vessel of thorax, initial encounter