ICD-10-CM Code Y99.1
Military activity

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

Y99.1 is a billable ICD code used to specify a diagnosis of military activity. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

POA Indicators on CMS form 4010A are as follows:

Indicator	Meaning	CMS Will Pay CC/MCC DRG Costs
Y	Diagnosis was present at time of inpatient admission	Yes
N	Diagnosis was not present at time of inpatient admission	No
U	Documentation insufficient to determine if the condition was present at the time of inpatient admission.	No
W	Clinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission.	Yes
1	Exempt from POA reporting	No

Coding Notes for Y99.1 Info for medical coders on how to properly use this ICD-10 code

Code Type-1 Excludes: Type-1 Excludes Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here.": Activity of off duty military personnel - instead, use code Y99.8

ICD-10-CM External Cause Index References for 'Y99.1 - Military activity'

The ICD-10-CM External Cause Index links the below-listed medical terms to the ICD code Y99.1. Click on any term below to browse the external cause index.

External cause status +

Status of external cause +

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

E000.1

Military activity (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code E000.1 was previously used, Y99.1 is the appropriate modern ICD10 code.

Parent Code: Y99 - External cause status

Code Navigator: ICD

ICD-10-CM Code Y99.1 Military activity