2024 ICD-10-CM Diagnosis Code W49.9XXA

Exposure to other inanimate mechanical forces, initial encounter

ICD-10-CM Code:
W49.9XXA
ICD-10 Code for:
Exposure to other inanimate mechanical forces, init encntr
Is Billable?
Yes - Valid for Submission
Code Navigator:

Code Classification

  • External causes of morbidity and mortality
    (V01–Y99)
    • Exposure to inanimate mechanical forces
      (W20-W49)
      • Exposure to other inanimate mechanical forces
        (W49)

W49.9XXA is a billable diagnosis code used to specify a medical diagnosis of exposure to other inanimate mechanical forces, initial encounter. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

W49.9XXA is an initial encounter code, includes a 7th character and should be used while the patient is receiving active treatment for a condition like exposure to other inanimate mechanical forces. According to ICD-10-CM Guidelines an "initial encounter" doesn't necessarily means "initial visit". The 7th character should be used when the patient is undergoing active treatment regardless if new or different providers saw the patient over the course of a treatment. The appropriate 7th character codes should also be used even if the patient delayed seeking treatment for a condition.

Approximate Synonyms

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

  • Accident due to physical impact or mechanical violence
  • Accident due to vibration
  • Exposed to vibration
  • Exposure to inanimate mechanical force
  • Exposure to mechanical force
  • Injury caused by taser
  • Overexertion, strenuous movements and vibration
  • Pathergy reaction
  • Sharps injury

Clinical Classification

Clinical CategoryCCSR Category CodeInpatient Default CCSROutpatient Default CCSR
External cause codes: intent of injury, accidental/unintentionalEXT020X - Not applicable.X - Not applicable.
External cause codes: other specified, classifiable and NEC; initial encounterEXT018X - Not applicable.X - Not applicable.

Convert W49.9XXA to ICD-9-CM

  • ICD-9-CM Code: E928.8 - 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

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.