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ICD-10-CM 2027 diagnosis code

W90.8XXDExposure to other nonionizing radiation, subsequent encounter

✓ Billable / specificPOA exemptRequires 7th character

W90.8XXD is a valid, billable ICD-10-CM code for exposure to other nonionizing radiation, subsequent encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Exposure to other nonionizing radiation, subs encntr

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About W90.8XXD

W90.8XXD is the ICD-10-CM diagnosis code for exposure to other nonionizing radiation, subsequent encounter. It belongs to category W90 (exposure to other nonionizing radiation), block W85-W99 (exposure to electric current, radiation and extreme ambient air temperature and pressure) and chapter 20 (external causes of morbidity). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

The 7th character "D" means subsequent encounter: use it for encounters after active treatment, while the patient is healing or recovering.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as E926.8 (exposure to other specified radiation).

7th character

Dsubsequent encounter

Other encounter types for W90.8:

Notes that apply from higher levels

Instructions written at a parent level also apply to W90.8XXD.

› From W90 Exposure to other nonionizing radiation
Excludes2
  • exposure to sunlight (X32)

Broader instructions also apply from W85-W99 Exposure to electric current, radiation and extreme ambient air temperature and pressure and Chapter 20: External causes of morbidity.

ICD-9-CM equivalent

Converter →
  • E926.8Exposure to other specified radiationapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about W90.8XXD

Is W90.8XXD billable?

Yes. W90.8XXD is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

What does the "D" at the end of W90.8XXD mean?

It is the 7th character for subsequent encounter. Per the official guidelines, use it for encounters after active treatment, while the patient is healing or recovering.

Can W90.8XXD be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict W90.8XXD as a principal diagnosis.

Is W90.8XXD a CC or MCC?

No. W90.8XXD is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for W90.8XXD?

The CMS General Equivalence Mappings map W90.8XXD to ICD-9-CM E926.8.