T81.31XA — Disruption of external operation (surgical) wound, not elsewhere classified, initial encounter
T81.31XA is a billable, specific ICD-10-CM code for disruption of external operation (surgical) wound, not elsewhere classified, initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from category T81
- 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.
- dehiscence of amputation stump (T87.81)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Dehiscence of operation wound NOS
- Disruption of operation wound NOS
- Disruption or dehiscence of closure of cornea
- Disruption or dehiscence of closure of mucosa
- Disruption or dehiscence of closure of skin and subcutaneous tissue
- Full-thickness skin disruption or dehiscence
- Superficial disruption or dehiscence of operation wound
Risk adjustment
T81.31XA 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
T81.31XA is named in 8 Medicare coverage policies — 6 listing it as supporting medical necessity, and 2 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56566Billing and Coding: Outpatient Physical and Occupational Therapy Servicesnot covered
- A57067Billing and Coding: Outpatient Physical and Occupational Therapy Servicesnot covered
- A55909Billing and Coding: Wound Care
- A56421Billing and Coding: CT of the Abdomen and Pelvis
Related codes at this level
Codes that share T81.31. If T81.31XA is not quite right, the correct code is usually one of these.
Questions about T81.31XA
- Is T81.31XA a billable ICD-10-CM code?
- Yes. T81.31XA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T81.31XA sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Complications of surgical and medical care, not elsewhere classified (T80-T88).
- What cannot be coded together with T81.31XA?
- T81.31XA carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.