Ill acknowledge this is an old post first, but it is the first topic that comes up with regards to CCM.
Its stated that a CCM fin coding comes from the respective CM.
It does not, it comes from the same pool as the Compassionate posting allowance.
Your CM and CoC (not direct CoC,) the higher up the chain is very influential in the decision made by Col of D Mil C.
Stating, if your memo as directed is to the CO of your unit, your CoC has to pass it up, with their input whether or not to support or not, from that point if your CO agrees that a CCM is the most appropriate way to resolve the reasoning for a posting, (family requirement, language, medical, career potential etc) he/she will then submit a letter to your CM, stating that bla bla bla should be posted to alleviate these issues.
From that point your CM may ask you for various ppwk, etc to support it (if they support it).
From what I have been informed by the OR, Base OR, CM, and other senior members including my RSM, Very rarely will the Col of D Mil C go against what the CM, CO and medical, or social services recommend for a member. Especially if the unit/location you are requesting to go has positions and is higher on the priority manning list.
Compassionates should be used as a last resort. They have very stringent career implications. I have researched this alot over the past year.