S93.421A

Sprain of deltoid ligament of right ankle, initial encounter

Billable / specific

S93.421A is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Includes (from S93)

  • avulsion of joint or ligament of ankle, foot and toe
  • laceration of cartilage, joint or ligament of ankle, foot and toe
  • sprain of cartilage, joint or ligament of ankle, foot and toe
  • traumatic hemarthrosis of joint or ligament of ankle, foot and toe
  • traumatic rupture of joint or ligament of ankle, foot and toe
  • traumatic subluxation of joint or ligament of ankle, foot and toe
  • traumatic tear of joint or ligament of ankle, foot and toe
  • Note: Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • Note: The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

Excludes2

Not included here — may be reported together when both conditions exist.

  • injury of Achilles tendon (S86.0-) (from S93.4)
  • birth trauma (P10-P15) (from S93)
  • obstetric trauma (O70-O71) (from S93)
  • burns and corrosions (T20-T32) (from S93)
  • fracture of ankle and malleolus (S82.-) (from S93)
  • frostbite (T33-T34) (from S93)
  • insect bite or sting, venomous (T63.4) (from S93)
  • strain of muscle and tendon of ankle and foot (S96.-) (from S93)

Use additional code

Add a code to identify the following, if applicable.

  • code to identify any retained foreign body, if applicable (Z18.-) (from S93)

Code also

An additional code may be needed.

  • any associated open wound (from S93)

7th character

The 7th character values that apply to this code (defined at S93). Use the placeholder "X" for missing positions.

CharacterMeaning
Ainitial encounter
Dsubsequent encounter
Ssequela

Parent code

  • S93.421Sprain of deltoid ligament of right ankleNeeds 7th char

Related codes

  • S93.421DSprain of deltoid ligament of right ankle, subsequent encounterBillable
  • S93.421SSprain of deltoid ligament of right ankle, sequelaBillable

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