ICD-10-CM 2027 diagnosis code
W58.09XDOther contact with alligator, subsequent encounter
W58.09XD is a valid, billable ICD-10-CM code for other contact with alligator, subsequent encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
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 W58.09XD
W58.09XD is the ICD-10-CM diagnosis code for other contact with alligator, subsequent encounter. It belongs to category W58 (contact with crocodile or alligator), block W50-W64 (exposure to animate mechanical forces) 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 E906.3 (bite of other animal except arthropod).
7th character
Dsubsequent encounter
Other encounter types for W58.09:
Notes that apply from higher levels
Instructions written at a parent level also apply to W58.09XD.
Broader instructions also apply from W50-W64 Exposure to animate mechanical forces and Chapter 20: External causes of morbidity.
ICD-9-CM equivalent
Converter →- E906.3Bite of other animal except arthropodapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about W58.09XD
Is W58.09XD billable?
- Yes. W58.09XD 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 W58.09XD 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 W58.09XD be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict W58.09XD as a principal diagnosis.
Is W58.09XD a CC or MCC?
- No. W58.09XD is neither a CC nor an MCC under MS-DRG v44.0.
What is the ICD-9 code for W58.09XD?
- The CMS General Equivalence Mappings map W58.09XD to ICD-9-CM E906.3.