# Gestational age codes: joint or independent?

**URL:** <https://forum.loinc.org/t/gestational-age-codes-joint-or-independent/1146>\
**Category:** other-clinical\
**Created:** [March 18, 2022, 5:07pm UTC](https://forum.loinc.org/t/gestational-age-codes-joint-or-independent/1146 "2022-03-18T17:07:31Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jlyle](https://forum.loinc.org/user_avatar/forum.loinc.org/jlyle/32/154_2.png) [@jlyle](https://forum.loinc.org/u/jlyle)\
**Post date:** [March 18, 2022, 5:07pm UTC](https://forum.loinc.org/t/gestational-age-codes-joint-or-independent/1146/1 "2022-03-18T17:07:31Z")

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49052-4 Gestational age in days

49051-6 Gestational age in weeks

&nbsp;

Do these codes imply joint use or independent use?

&nbsp;

I.e., if a child has a GA of 37 weeks and 3 days, would that be represented as joint:

49051-6 Gestational age in weeks = 37

AND

49052-4 Gestational age in days = 3

&nbsp;

or independent:

49051-6 Gestational age in weeks = 37.42

OR

49052-4 Gestational age in days = 262

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**Author:** ![pdbanning](https://forum.loinc.org/letter_avatar_proxy/v4/letter/p/9f8e36/32.png) [@pdbanning](https://forum.loinc.org/u/pdbanning)\
**Post date:** [March 21, 2022, 4:27pm UTC](https://forum.loinc.org/t/gestational-age-codes-joint-or-independent/1146/2 "2022-03-21T16:27:32Z")

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Hi Jay,

I wouldn’t say there’s any “implication”. My experience has always been decimal representation over 1 week; such as your 37.42 example. Have only seen systems with one field (their algorithms working off of either weeks OR days).

Have a great week,

Pam

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**Author:** ![jlyle](https://forum.loinc.org/user_avatar/forum.loinc.org/jlyle/32/154_2.png) [@jlyle](https://forum.loinc.org/u/jlyle)\
**Post date:** [March 22, 2022, 10:25am UTC](https://forum.loinc.org/t/gestational-age-codes-joint-or-independent/1146/3 "2022-03-22T10:25:28Z")

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Thanks, Pam,

Yes, our source system uses the compositional approach, so if there’s precedent we’d prefer to keep it that way. But if that’s not what they mean, we don’t want to sow confusion.

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**Author:** ![system](https://forum.loinc.org/uploads/default/original/1X/dbab97ce9b2987d788a376e254fcaae249f3b672.png) [@system](https://forum.loinc.org/u/system)\
**Post date:** [June 23, 2023, 3:36pm UTC](https://forum.loinc.org/t/gestational-age-codes-joint-or-independent/1146/4 "2023-06-23T15:36:50Z")

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Closed on June 23, 2023, 3:36pm UTC