S00.221A Blister (nonthermal) of right eyelid and periocular area, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S00.221 with 7th character A (initial encounter).

Applies from S00 Superficial injury of head

Excludes1 (never code together)

• diffuse cerebral contusion (S06.2-)
• focal cerebral contusion (S06.3-)
• injury of eye and orbit (S05.-)
• open wound of head (S01.-)

7th character note

• The appropriate 7th character is to be added to each code from category S00

7th character required

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

Applies from S00.2 Other and unspecified superficial injuries of eyelid and periocular area

Excludes2 (not included here)

• superficial injury of conjunctiva and cornea (S05.0-)

Code annotations containing back-references to S00.221A

Back-references to S00.2

• Type 2 Excludes: S05 Injury of eye and orbit ("superficial injury of eyelid (S00.1-S00.2)")

Back-references to S00

• Code Also: G96.00 Cerebrospinal fluid leak, unspecified ("head injury (S00-S09)")
• Code Also: G96.08 Other cranial cerebrospinal fluid leak ("head injury (S00 - S09)")
• Code Also: G96.09 Other spinal cerebrospinal fluid leak ("head injury (S00 - S09)")
• Code First: R65.1 Systemic inflammatory response syndrome (SIRS) of non-infectious origin ("injury and trauma (S00-T88)")

Nearby codes

• S00.219A Abrasion of unspecified eyelid and periocular area, initial encounter
• S00.219D Abrasion of unspecified eyelid and periocular area, subsequent encounter
• S00.219S Abrasion of unspecified eyelid and periocular area, sequela
• S00.22 Blister (nonthermal) of eyelid and periocular area
• S00.221 Blister (nonthermal) of right eyelid and periocular area
• S00.221A Blister (nonthermal) of right eyelid and periocular area, initial encounter (this code)
• S00.221D Blister (nonthermal) of right eyelid and periocular area, subsequent encounter
• S00.221S Blister (nonthermal) of right eyelid and periocular area, sequela
• S00.222 Blister (nonthermal) of left eyelid and periocular area
• S00.222A Blister (nonthermal) of left eyelid and periocular area, initial encounter
• S00.222D Blister (nonthermal) of left eyelid and periocular area, subsequent encounter