W21.00XS - Struck by hit or thrown ball, unspecified type, sequela

Version 2023
ICD-10:W21.00XS
Short Description:Struck by hit or thrown ball, unspecified type, sequela
Long Description:Struck by hit or thrown ball, unspecified type, sequela
Status: Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • External causes of morbidity and mortality (V01–Y98)
    • Exposure to inanimate mechanical forces (W20-W49)
      • Striking against or struck by sports equipment (W21)

W21.00XS is a billable ICD-10 code used to specify a medical diagnosis of struck by hit or thrown ball, unspecified type, sequela. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

W21.00XS is a sequela code, includes a 7th character and should be used for complications that arise as a direct result of a condition like struck by hit or thrown ball unspecified type. According to ICD-10-CM Guidelines a "sequela" code should be used for chronic or residual conditions that are complications of an initial acute disease, illness or injury. The most common sequela is pain. Usually, two diagnosis codes are needed when reporting sequela. The first code describes the nature of the sequela while the second code describes the sequela or late effect.

Unspecified diagnosis codes like W21.00XS are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Present on Admission (POA)

W21.00XS is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here.

CMS POA Indicator Options and Definitions

POA Indicator CodePOA Reason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert to ICD-9 Code

Source ICD-10 CodeTarget ICD-9 Code
W21.00XSE929.8 - Late eff accident NEC
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Code History