2020 ICD-10-CM Diagnosis Code S90.42

Blister (nonthermal) of toe

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • S90.42 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM S90.42 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of S90.42 - other international versions of ICD-10 S90.42 may differ.
The following code(s) above S90.42 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to S90.42:
  • S00-T88
    2020 ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    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
    Type 1 Excludes
    Use Additional
    • code to identify any retained foreign body, if applicable (Z18.-)
    Injury, poisoning and certain other consequences of external causes
  • S90-S99
    2020 ICD-10-CM Range S90-S99

    Injuries to the ankle and foot

    Type 2 Excludes
    • burns and corrosions (T20-T32)
    • fracture of ankle and malleolus (S82.-)
    • frostbite (T33-T34)
    • insect bite or sting, venomous (T63.4)
    Injuries to the ankle and foot
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to S90.42:
  • Blister (nonthermal)
    • toe(s) S90.42-
      • great S90.42-

ICD-10-CM Codes Adjacent To S90.42
S90.414D …… subsequent encounter
S90.414S …… sequela
S90.415 Abrasion, left lesser toe(s)
S90.415A …… initial encounter
S90.415D …… subsequent encounter
S90.415S …… sequela
S90.416 Abrasion, unspecified lesser toe(s)
S90.416A …… initial encounter
S90.416D …… subsequent encounter
S90.416S …… sequela
S90.42 Blister (nonthermal) of toe
S90.421 Blister (nonthermal), right great toe
S90.421A …… initial encounter
S90.421D …… subsequent encounter
S90.421S …… sequela
S90.422 Blister (nonthermal), left great toe
S90.422A …… initial encounter
S90.422D …… subsequent encounter
S90.422S …… sequela
S90.423 Blister (nonthermal), unspecified great toe
S90.423A …… initial encounter

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.