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Code
Description

ICD-10-CM Code Z77.121
Contact with and (suspected) exposure to harmful algae and algae toxins

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
POA Exempt
POA Exempt Code
The Center for Medicare & Medicaid Services (CMS) requires medical coders to indicate whether or not a condition was present at the time of admission, in order to properly assign MS-DRG codes. This "Present On Admission" (POA) indicator is recorded on CMS form 4010A.
| ICD-10 from 2011 - 2016

Z77.121 is a billable ICD code used to specify a diagnosis of contact with and (suspected) exposure to harmful algae and algae toxins. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

POA Indicators on CMS form 4010A are as follows:

IndicatorMeaningCMS Will Pay CC/MCC DRG Costs
YDiagnosis was present at time of inpatient admissionYes
NDiagnosis was not present at time of inpatient admissionNo
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.No
WClinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission.Yes
1Exempt from POA reportingNo


Coding Notes for Z77.121 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Contact with and (suspected) exposure to (harmful) algae bloom NOS
Contact with and (suspected) exposure to blue-green algae bloom
Contact with and (suspected) exposure to brown tide
Contact with and (suspected) exposure to cyanobacteria bloom
Contact with and (suspected) exposure to Florida red tide
Contact with and (suspected) exposure to pfiesteria piscicida
Contact with and (suspected) exposure to red tide

MS-DRG Mapping

  • DRG Group #951 - Other factors influencing health status.

ICD-10-CM Alphabetical Index References for 'Z77.121 - Contact with and (suspected) exposure to harmful algae and algae toxins'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code Z77.121. Click on any term below to browse the alphabetical index.

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Contact with and (suspected) exposure to algae bloom (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code Z77.121 and a single ICD9 code, V87.32 is an approximate match for comparison and conversion purposes.


Parent Code: Z77.12 - Contact with and (suspected) exposure to hazards in the physical environment

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/Z77121