Contact with other nonvenomous reptiles (W59) ICD-10-CM
The W59 code range covers contact with other nonvenomous reptiles with 61 ICD-10-CM diagnosis codes. 42 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to each code from category W59
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the W59 Range 61 codes · 42 billable
- W59 Contact with other nonvenomous reptilesNon-billable
- W59.0 Contact with nonvenomous lizardsNon-billable
- W59.01 Bitten by nonvenomous lizardsNon-billable
- W59.01XA Bitten by nonvenomous lizards, initial encounter
- W59.01XD Bitten by nonvenomous lizards, subsequent encounter
- W59.01XS Bitten by nonvenomous lizards, sequela
- W59.02 Struck by nonvenomous lizardsNon-billable
- W59.02XA Struck by nonvenomous lizards, initial encounter
- W59.02XD Struck by nonvenomous lizards, subsequent encounter
- W59.02XS Struck by nonvenomous lizards, sequela
- W59.09 Other contact with nonvenomous lizardsNon-billable
- W59.09XA Other contact with nonvenomous lizards, initial encounter
- W59.09XD Other contact with nonvenomous lizards, subsequent encounter
- W59.09XS Other contact with nonvenomous lizards, sequela
- W59.1 Contact with nonvenomous snakesNon-billable
- W59.11 Bitten by nonvenomous snakeNon-billable
- W59.11XA Bitten by nonvenomous snake, initial encounter
- W59.11XD Bitten by nonvenomous snake, subsequent encounter
- W59.11XS Bitten by nonvenomous snake, sequela
- W59.12 Struck by nonvenomous snakeNon-billable
- W59.12XA Struck by nonvenomous snake, initial encounter
- W59.12XD Struck by nonvenomous snake, subsequent encounter
- W59.12XS Struck by nonvenomous snake, sequela
- W59.13 Crushed by nonvenomous snakeNon-billable
- W59.13XA Crushed by nonvenomous snake, initial encounter
- W59.13XD Crushed by nonvenomous snake, subsequent encounter
- W59.13XS Crushed by nonvenomous snake, sequela
- W59.19 Other contact with nonvenomous snakeNon-billable
- W59.19XA Other contact with nonvenomous snake, initial encounter
- W59.19XD Other contact with nonvenomous snake, subsequent encounter
- W59.19XS Other contact with nonvenomous snake, sequela
- W59.2 Contact with turtlesNon-billable
- W59.21 Bitten by turtleNon-billable
- W59.21XA Bitten by turtle, initial encounter
- W59.21XD Bitten by turtle, subsequent encounter
- W59.21XS Bitten by turtle, sequela
- W59.22 Struck by turtleNon-billable
- W59.22XA Struck by turtle, initial encounter
- W59.22XD Struck by turtle, subsequent encounter
- W59.22XS Struck by turtle, sequela
- W59.29 Other contact with turtleNon-billable
- W59.29XA Other contact with turtle, initial encounter
- W59.29XD Other contact with turtle, subsequent encounter
- W59.29XS Other contact with turtle, sequela
- W59.8 Contact with other nonvenomous reptilesNon-billable
- W59.81 Bitten by other nonvenomous reptilesNon-billable
- W59.81XA Bitten by other nonvenomous reptiles, initial encounter
- W59.81XD Bitten by other nonvenomous reptiles, subsequent encounter
- W59.81XS Bitten by other nonvenomous reptiles, sequela
- W59.82 Struck by other nonvenomous reptilesNon-billable
- W59.82XA Struck by other nonvenomous reptiles, initial encounter
- W59.82XD Struck by other nonvenomous reptiles, subsequent encounter
- W59.82XS Struck by other nonvenomous reptiles, sequela
- W59.83 Crushed by other nonvenomous reptilesNon-billable
- W59.83XA Crushed by other nonvenomous reptiles, initial encounter
- W59.83XD Crushed by other nonvenomous reptiles, subsequent encounter
- W59.83XS Crushed by other nonvenomous reptiles, sequela
- W59.89 Other contact with other nonvenomous reptilesNon-billable
- W59.89XA Other contact with other nonvenomous reptiles, initial encounter
- W59.89XD Other contact with other nonvenomous reptiles, subsequent encounter
- W59.89XS Other contact with other nonvenomous reptiles, sequela
About the W59 Code Range
The ICD-10 code W59 category is used to classify injuries caused by contact with nonvenomous reptiles, including lizards, snakes, turtles, and other reptiles. These codes help specify the nature of the contact, such as being bitten, struck, crushed, or other types of interactions.
This section covers a range of situations where a person may experience harm from nonvenomous reptiles, with codes like W59.01XA for an initial encounter after a lizard bite, and W59.11XA for a first visit related to a nonvenomous snake bite. Terms such as “lizard bite,” “snake bite,” and “bite of reptile” are synonyms linked to specific codes, helping medical coders select the right classification. It also includes encounters following the initial treatment (subsequent encounter) and complications related to these injuries (sequela). For example, W59.21XA indicates a first treatment for a bite of turtle. Additional codes detail other contacts like being struck or crushed by these reptiles and specify initial or follow-up care. This coding ensures clear documentation of these unique reptile-related injuries in healthcare records.
Questions About This Page
How many billable codes are in the W59 range?
Of the 61 codes in this range, 42 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the W59 range classify?
The range classifies contact with other nonvenomous reptiles. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
