Esophagitis unspecified

Last Monday I had an upper endoscopy done. The paper with pics said esophagitis, unspecified and chronic gastritis unspecified. Does anyone have any idea of why it says this?

I am not a doctor and can easily be wrong so check with the doctor but based on this link maybe unspecified just means they dont know the exact cause ( bacteria, reflux, diet related etc) https://www.icd10data.com/ICD10CM/Codes/K00-K95/K20-K31/K20-/K20.9