ICD-10 Code for Sinus

The ICD-10-CM 2027 alphabetic index lists sinus with the subterms below. More specific codes depend on the details documented, as listed in the official index (20 codes, 19 billable).

Index entries for Sinus

abdominal – K63.89
arrest – I45.5
arrhythmia – I49.89
bradycardia – R00.1
branchial cleft (internal) (external) – Q18.0
coccygeal – see Sinus, pilonidal
dental – K04.6
dermal (congenital) – Q06.8
- with abscess – Q06.8
- coccygeal, pilonidal – see Sinus, coccygeal
infected, skin NEC – L08.89
marginal, ruptured or bleeding – see Hemorrhage, antepartum, specified cause NEC
medial, face and neck – Q18.8
pause – I45.5
pericranii – Q01.9
pilonidal (infected) (rectum) – L05.92
- with abscess – L05.02
preauricular – Q18.1
rectovaginal – N82.3
Rokitansky-Aschoff (gallbladder) – K82.8
sacrococcygeal (dermoid) (infected) – see Sinus, pilonidal
tachycardia – R00.0
- paroxysmal – I47.19
tarsi syndrome – M25.57- (header)
testis – N50.89
tract (postinfective) – see Fistula
urachus – Q64.4

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.