That is what I would do. Others may have different thoughts.(Not a teacher! Just studying to become medical transcriptionist.) You can also ask your transcription teachers these questions. In most cases the presence or absence of a comma will only be important when it clearly changes the meaning.
#1 I am torn between leaving the commas in the following sentence or taking them out: Mild, anterior, plantar fascial tenderness.
I was thinking of leaving them in thinking that mild, anterior, and plantar are all modifying/describing the fascial tenderness. But we don't separate multiple adjectives with commas.
#2 In this sentence, I was thinking the comma was correct as the ending seemed to me as "extra" or paenethical: Parents in good health except for father, who has back pain.
#3 In this one, I am not quite sure if the comma is needed. I was leaning toward no comma as the last part of the sentence seems important: Medication discontinued after 3 years of therapy, due to finiancial hardship. Keep the comma; otherwise it sounds like the therapy was due to financial hardship.
#4 This one, I put a comma in thinking that the words within the comma were also parentheical pharses but I'm not quite sure: This began in 1997, when she was postpartum, and devleoped depression, pain, and mood swings. Remove the comma after "postpartum".
Please, somebody help!!!!!