ICD-10-CM › Q00-QA1 › Q20-Q28 › Q23 Congenital malformations of aortic... › Q23.4
Q23.4
Hypoplastic left heart syndrome
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Hypoplastic left heart syndrome
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Missing
- Immature
- Amputation
- Impervious
- Imperforate
- Underdevelopment
- Loss > organ or part
- Absence > toe > with foot
- Prematurity NEC > extreme
- Undeveloped, undevelopment
- Absence > congenital > lumen
- Birth > immature > extremely
- Immature > birth > extremely
- Premature > newborn > extreme
- Immaturity > organ or site NEC
- Valve, valvular > congenital NEC
- Blind > tract or tube, congenital NEC
- Stricture > organ or site, congenital NEC
- Constriction > organ or site, congenital NEC
- Obliteration > organ or site, congenital NEC
- Block, blocked > organ or site, congenital NEC
- Nondevelopment > organ or site, congenital NEC
- Stenosis, stenotic > organ or site, congenital NEC
- Development > incomplete > organ or site not listed
- Occlusion, occluded > organ or site, congenital NEC
- Strangulation, strangulated > organ or site, congenital NEC
- Contraction, contracture, contracted > organ or site, congenital NEC
- Obstruction, obstructed, obstructive > organ or site, congenital NEC
- Syndrome > hypoplastic left-heart
- Hypoplasia, hypoplastic > left heart syndrome
- Atresia, atretic > aortic > in hypoplastic left heart syndrome
- Atresia, atretic > mitral valve > in hypoplastic left heart syndrome
- Hypoplasia, hypoplastic > aorta, aortic > valve > in hypoplastic left heart syndrome
- Hypoplasia, hypoplastic > aorta, aortic > ascending, in hypoplastic left heart syndrome
- Development > defective, congenital > left ventricle > in hypoplastic left heart syndrome
- Atresia, atretic > aortic > congenital with hypoplasia of ascending aorta and defective development of left ventricle
Codes in the same group
| Code | Description | Status |
|---|---|---|
| Q23.0 | Congenital stenosis of aortic valve | Valid |
| Q23.1 | Congenital insufficiency of aortic valve | Valid |
| Q23.2 | Congenital mitral stenosis | Valid |
| Q23.3 | Congenital mitral insufficiency | Valid |
| Q23.8 | Other congenital malformations of aortic and mitral valves | Not billable |
| Q23.9 | Congenital malformation of aortic and mitral valves, unspecified | Valid |