W16.811D vs Z91.81
W16.811D (Jumping or diving into other water striking water surface causing drowning and submersion, subsequent encounter) compared with Z91.81 (History of falling), from the official CMS tabular data.
Summary
No coding relationship between these codes was found in the tabular notes or in MedCoder’s derived relationships.
- What is different?
The conditions named and chapter.W16.811D is “Jumping or diving into other water striking water surface causing drowning and submersion, subsequent encounter”; Z91.81 is “History of falling”. W16.811D sits in V00-Y99 — External Causes of Morbidity (V00-Y99); Z91.81 in Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99).
Registry fact
- Can these codes be reported together?
No instruction prevents it.No note in either entry names the other, and no derived relationship links them. Each may be reported when its own documentation requirements are met.
Registry fact
- Is there an Excludes1 relationship?
None.Neither entry carries an Excludes1 note that names the other code. W16.811D carries 10 Excludes1 notes covering other codes; the side-by-side table quotes them.
Official rule
- Is there an Excludes2 relationship?
None.Neither entry carries an Excludes2 note that names the other code. W16.811D carries 4 Excludes2 notes and Z91.81 carries 5 Excludes2 notes covering other codes; the side-by-side table quotes them.
Official rule
- Is one more specific?
Not comparable.The codes sit in different categories; specificity is only comparable within one category.
- Is one a parent or header code?
No.Both are billable codes, and neither contains the other.
Registry fact
- Are there sequencing instructions?
None.Neither entry carries a Code First or Use Additional Code note that names the other.
Official rule
- Are there other coding relationships?
None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.
MedCoder-derived
Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels
Can these codes be reported together?
Yes.
No Excludes1/Excludes2 relationship exists between these codes in the official tabular list. Each may be reported when its own documentation requirements are met.
Side by side
| W16.811DJumping or diving into other water striking water surface causing drowning and submersion, subsequent encounter | Z91.81History of falling | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | V00-Y99 — External Causes of Morbidity (V00-Y99) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Jumping or diving into other water striking water surface causing drowning and submersion, subsequent encounter is a billable ICD-10-CM diagnosis code (W16.811D). | History of falling is a billable ICD-10-CM diagnosis code (Z91.81). |
| 7th character | The appropriate 7th character is to be added to each code from category W16 | — |
| Includes | — | At risk for falling |
| Excludes1 | drowning and submersion while in other water without jumping or diving (W73) accidental non-watercraft drowning and submersion not involving fall (W65-W74) effects of air pressure from diving (W94.-) fall into water from watercraft (V90-V94) hitting an object or against bottom when falling from watercraft (V94.0) assault involving a fall (Y01-Y02) fall from animal (V80.-) fall (in) (from) machinery (in operation) (W28-W31) fall (in) (from) transport vehicle (V01-V99) intentional self-harm involving a fall (X80-X81) | — |
| Excludes2 | striking or hitting diving board (W21.4) at risk for fall (history of fall) Z91.81 fall (in) (from) burning building (X00.-) fall into fire (X00-X04, X08) | contact with and (suspected) exposures hazardous to health (Z77.-) exposure to pollution and other problems related to physical environment (Z77.1-) female genital mutilation status (N90.81-) occupational exposure to risk factors (Z57.-) personal history of physical injury and trauma (Z87.81, Z87.82-) |
| Code also | — | any follow-up examination (Z08-Z09) |
Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on.
Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources