2020 ICD-10-CM Diagnosis Code S66.421D

Laceration of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter

    2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
  • S66.421D is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Lacerat intrinsic musc/fasc/tend r thm at wrs/hnd lv, subs
  • The 2020 edition of ICD-10-CM S66.421D became effective on October 1, 2019.
  • This is the American ICD-10-CM version of S66.421D - other international versions of ICD-10 S66.421D may differ.
The following code(s) above S66.421D 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 S66.421D:
  • 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
  • S60-S69
    2020 ICD-10-CM Range S60-S69

    Injuries to the wrist, hand and fingers

    Type 2 Excludes
    Injuries to the wrist, hand and fingers
  • S66
    ICD-10-CM Diagnosis Code S66

    Injury of muscle, fascia and tendon at wrist and hand level

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code Also
    • any associated open wound (S61.-)
    Type 2 Excludes
    • sprain of joints and ligaments of wrist and hand (S63.-)
    Injury of muscle, fascia and tendon at wrist and hand level
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • S66.421D is considered exempt from POA reporting.
ICD-10-CM S66.421D is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 949 Aftercare with cc/mcc
  • 950 Aftercare without cc/mcc

Convert S66.421D to ICD-9-CM

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
ICD-10-CM Codes Adjacent To S66.421D
S66.412A …… initial encounter
S66.412D …… subsequent encounter
S66.412S …… sequela
S66.419 Strain of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level
S66.419A …… initial encounter
S66.419D …… subsequent encounter
S66.419S …… sequela
S66.42 Laceration of intrinsic muscle, fascia and tendon of thumb at wrist and hand level
S66.421 Laceration of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level
S66.421A …… initial encounter
S66.421D …… subsequent encounter
S66.421S …… sequela
S66.422 Laceration of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level
S66.422A …… initial encounter
S66.422D …… subsequent encounter
S66.422S …… sequela
S66.429 Laceration of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level
S66.429A …… initial encounter
S66.429D …… subsequent encounter
S66.429S …… sequela
S66.49 Other specified injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level

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