K36 — Other appendicitis
K36 is a billable, specific ICD-10-CM code for other appendicitis. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Chronic appendicitis
- Recurrent appendicitis
Risk adjustment
K36 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
K36 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56421Billing and Coding: CT of the Abdomen and Pelvis
How K36 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to K36.
- Subsiding appendicitis
- Appendicitis›chronic(recurrent)
- Appendicitis›healed(obliterative)
- Appendicitis›interval
- Appendicitis›neurogenic
- Appendicitis›obstructive
- Appendicitis›recurrent
- Appendicitis›relapsing
- Appendicitis›subacute(adhesive)
- Appendicitis›subsiding
Questions about K36
- Is K36 a billable ICD-10-CM code?
- Yes. K36 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does K36 sit in the tabular list?
- Diseases of the digestive system (K00-K95), in the block Diseases of appendix (K35-K38).