T45.4X6D — Underdosing of iron and its compounds, subsequent encounter
T45.4X6D is a billable, specific ICD-10-CM code for underdosing of iron and its compounds, subsequent encounter. It is valid for submission on a claim.
7th character "D" — subsequent encounter
The appropriate 7th character is to be added to each code from category T45
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- iron deficiency (E61.1)
Risk adjustment
T45.4X6D does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
T45.4X6D is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A57473Billing and Coding: Allergy Testing
- A57473Billing and Coding: Allergy Testing
Related codes at this level
Codes that share T45.4X6. If T45.4X6D is not quite right, the correct code is usually one of these.
Questions about T45.4X6D
- Is T45.4X6D a billable ICD-10-CM code?
- Yes. T45.4X6D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T45.4X6D sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50).
- What cannot be coded together with T45.4X6D?
- T45.4X6D carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.