This appendix appears in the following handbooks:

Home and Community-based Services Program Billing Guidelines (HCSBG): Appendix II
Texas Home Living Program Billing Guidelines (TxHmLBG): Appendix VI
Transition Assistance Services Orientation Handbook (TAS): Appendix III

Degree of Consanguinity or Affinity
02-2012

For the purposes of these billing guidelines, a person is considered to be a relative if the person is related within the fourth degree of consanguinity or within the second degree of affinity.

Relationships of Consanguinity

Two people are related to each other by consanguinity if one is a descendant of the other or if they share a common ancestor. An adopted child is considered to be a child of the adoptive parent for this purpose.

Example: Person A is related by the third degree of consanguinity to person B if person B is person A's uncle (brother of person A's father) because they share a common ancestor. However, person A is not related by consanguinity to person C if person C is the uncle's spouse, because person A and person C share no common ancestor.

Relationships of Affinity

Two people are related by affinity if they are married to each other, or if one person is related by consanguinity to the other person's spouse.

Example: Person A is related within the second degree of affinity to the brother of person A's spouse because the brother and the spouse are related by consanguinity.

The ending of a marriage between two people by divorce or the death of a spouse ends relationships by affinity created by that marriage, unless a child of that marriage is living, in which case the marriage is considered to continue as long as a child of that marriage lives.

The chart below lists relationships within the fourth degree of consanguinity and within the second degree of affinity.

Relationship of Consanguinity

Person

1st Degree

2nd Degree

3rd Degree*

4th Degree*

child or
parent

grandchild,
sister,
brother or
grand-parent

great-grandchild,
niece,
nephew,
aunt,*
uncle* or
great-grandparent

great-great-grandchild,
grandniece,
grandnephew,
first cousin,
great aunt,*
great uncle* or
great-great-grandparent


Relationship of Affinity

Person

1st Degree

2nd Degree

spouse,
mother-in-law,
father-in-law,
son-in-law,
daughter-in-law,
stepson,
stepdaughter,
stepmother or
stepfather

brother-in-law,
sister-in-law,
spouse's grandparent,
spouse's grandchild,
grandchild's spouse or
spouse of grandparent

* An aunt, uncle, great aunt or great uncle is related to a person by consanguinity only if he or she is the sibling of the person's parent or grandparent.