Q44.4 — Choledochal cyst
Q44.4 is a billable, specific ICD-10-CM code for choledochal cyst. It is valid for submission on a claim.
Risk adjustment
Q44.4 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
Q44.4 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.
- A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
- A56421Billing and Coding: CT of the Abdomen and Pelvis
How Q44.4 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 Q44.4.
- Cyst›choledochus, congenital
Related codes at this level
Codes that share Q44. If Q44.4 is not quite right, the correct code is usually one of these.
- Q44.0Agenesis, aplasia and hypoplasia of gallbladder
- Q44.1Other congenital malformations of gallbladder
- Q44.2Atresia of bile ducts
- Q44.3Congenital stenosis and stricture of bile ducts
- Q44.5Other congenital malformations of bile ducts
- Q44.6Cystic disease of liver
- Q44.7Other congenital malformations of liver
Questions about Q44.4
- Is Q44.4 a billable ICD-10-CM code?
- Yes. Q44.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Q44.4 sit in the tabular list?
- Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Other congenital malformations of the digestive system (Q38-Q45).