S01.551A Open bite of lip, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S01.551 with 7th character A (initial encounter).

Applies from S01 Open wound of head

Excludes1 (never code together)

• open skull fracture (S02.- with 7th character B)

Excludes2 (not included here)

• injury of eye and orbit (S05.-)
• traumatic amputation of part of head (S08.-)

Code also

• any associated:
• injury of cranial nerve (S04.-)
• injury of muscle and tendon of head (S09.1-)
• intracranial injury (S06.-)
• wound infection

7th character note

• The appropriate 7th character is to be added to each code from category S01

7th character required

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

Applies from S01.5 Open wound of lip and oral cavity

Excludes2 (not included here)

• tooth dislocation (S03.2)
• tooth fracture (S02.5)

Applies from S01.551 Open bite of lip

Applicable to

• Bite of lip NOS

Excludes1 (never code together)

• superficial bite of lip (S00.571)

Code annotations containing back-references to S01.551A

Back-references to S01.551

• Type 1 Excludes: S00.571 Other superficial bite of lip ("open bite of lip (S01.551)")

Back-references to S01

• 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)")
• Type 1 Excludes: S00 Superficial injury of head ("open wound of head (S01.-)")
• Code Also: S04 Injury of cranial nerve ("open wound of head (S01.-)")
• Code Also: S06 Intracranial injury ("open wound of head (S01.-)")
• Code Also: S09.1 Injury of muscle and tendon of head ("any associated open wound (S01.-)")

Diagnosis Index entries for S01.551A

• Bite (s) (animal) (human) › lip

Nearby codes

• S01.542A Puncture wound with foreign body of oral cavity, initial encounter
• S01.542D Puncture wound with foreign body of oral cavity, subsequent encounter
• S01.542S Puncture wound with foreign body of oral cavity, sequela
• S01.55 Open bite of lip and oral cavity
• S01.551 Open bite of lip
• S01.551A Open bite of lip, initial encounter (this code)
• S01.551D Open bite of lip, subsequent encounter
• S01.551S Open bite of lip, sequela
• S01.552 Open bite of oral cavity
• S01.552A Open bite of oral cavity, initial encounter
• S01.552D Open bite of oral cavity, subsequent encounter