Y93.15
Y93.15 is a valid billable ICD-10 diagnosis code for Activity, underwater diving and snorkeling. It is found in the 2025 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2024 - Sep 30, 2025.
Y93.15 is exempt from POA reporting (Present On Admission).
↓ See below for any exclusions, inclusions or special notations
External causes of morbidity codes describe the circumstance causing an injury, not the nature of the injury, and therefore should not be used as a principal diagnosis.
See also, External Cause of Injuries
ICD-10 code Y93.15 is based on the following Tabular structure:
Chapter 20: External causes of morbidity↑ Parent code:
Y93.1 for Activities involving water and water craft
Should you use Y93.15
or Y9315
(with or without decimal point)?
DO NOT include the decimal point when electronically filing claims as it may be rejected. Some clearinghouses may remove it for you
but to avoid having a rejected claim due to an invalid ICD-10 code, do not include the decimal point when submitting claims electronically.
These categories may be used to provide supplementary information concerning causes of morbidity. They are not to be used for single-condition coding.
Note: Category Y93 is provided for use to indicate the activity of the person seeking healthcare for an injury or health condition, such as a heart attack while shoveling snow, which resulted from, or was contributed to, by the activity. These codes are appropriate for use for both acute injuries, such as those from chapter 19, and conditions that are due to the long-term, cumulative effects of an activity, such as those from chapter 13. They are also appropriate for use with external cause codes for cause and intent if identifying the activity provides additional information on the event. These codes should be used in conjunction with codes for external cause status (Y99) and place of occurrence (Y92).
This section contains the following broad activity categories:
Y93.0 Activities involving walking and running
Y93.1 Activities involving water and water craft
Y93.2 Activities involving ice and snow
Y93.3 Activities involving climbing, rappelling, and jumping off
Y93.4 Activities involving dancing and other rhythmic movement
Y93.5 Activities involving other sports and athletics played individually
Y93.6 Activities involving other sports and athletics played as a team or group
Y93.7 Activities involving other specified sports and athletics
Y93.A Activities involving other cardiorespiratory exercise
Y93.B Activities involving other muscle strengthening exercises
Y93.C Activities involving computer technology and electronic devices
Y93.D Activities involving arts and handcrafts
Y93.E Activities involving personal hygiene and interior property and clothing maintenance
Y93.F Activities involving caregiving
Y93.G Activities involving food preparation, cooking and grilling
Y93.H Activities involving exterior property and land maintenance, building and construction
Y93.I Activities involving roller coasters and other types of external motion
Y93.J Activities involving playing musical instrument
Y93.K Activities involving animal care
Y93.8 Activities, other specified
Y93.9 Activity, unspecified
NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.
NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.
This note further define, or give examples of, the content of the code or category.
List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of “other specified” codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first, if applicable, followed by the manifestation. Wherever such a combination exists, there is a “use additional code” note at the etiology code, and a “code first” note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
A type 1 Excludes note is a pure excludes. 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.
A type 2 Excludes note represents 'Not included here'. An Excludes2 note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When an Excludes2 note appears under a code it is acceptable to use both the code and the excluded code together.
A “code also” note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction. The sequencing depends on the circumstances of the encounter.
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first, if applicable, followed by the manifestation. Wherever such a combination exists, there is a “use additional code” note at the etiology code, and a “code first” note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.