Q23.82: Congenital mitral valve cleft leaflet
Q23.82, congenital mitral valve cleft leaflet, is listed as a covered diagnosis in 6 Medicare billing and coding articles that apply to 32 HCPCS Level II codes, including C8925 (Transesophageal echocardiography (tee) with contrast, or…), C8926 (Transesophageal echocardiography (tee) with contrast, or…), C8927 (Transesophageal echocardiography (tee) with contrast, or…). The articles come from 5 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with Q23.82 as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| C8925 | Transesophageal echocardiography (tee) with contrast, or without contrast followed by with contrast, real time with image documentation (2d) (with or without m-mode recording); including probe placement, image acquisition, interpretation and report | Special coverage instructions apply | — | 2 |
| C8926 | Transesophageal echocardiography (tee) with contrast, or without contrast followed by with contrast, for congenital cardiac anomalies; including probe placement, image acquisition, interpretation and report | Special coverage instructions apply | — | 2 |
| C8927 | Transesophageal echocardiography (tee) with contrast, or without contrast followed by with contrast, for monitoring purposes, including probe placement, real time 2-dimensional image acquisition and interpretation leading to ongoing (continuous) assessment of (dynamically changing) cardiac pumping function and to therapeutic measures on an immediate time basis | Special coverage instructions apply | — | 2 |
| J0461 | Injection, atropine sulfate, 0.01 mg | Special coverage instructions apply | — | 3 |
| J0153 | Injection, adenosine, 1 mg (not to be used to report any adenosine phosphate compounds) | Special coverage instructions apply | — | 3 |
| J1250 | Injection, dobutamine hydrochloride, per 250 mg | Special coverage instructions apply | — | 3 |
| J0280 | Injection, aminophyllin, up to 250 mg | Special coverage instructions apply | — | 3 |
| J1245 | Injection, dipyridamole, per 10 mg | Special coverage instructions apply | — | 3 |
| Q9957 | Injection, perflutren lipid microspheres, per ml | Carrier judgment | — | 2 |
| Q9956 | Injection, octafluoropropane microspheres, per ml | Carrier judgment | — | 2 |
| Q9955 | Injection, perflexane lipid microspheres, per ml | Carrier judgment | — | 2 |
| A9700 | Supply of injectable contrast material for use in echocardiography, per study | Special coverage instructions apply | — | 2 |
| A9500 | Technetium tc-99m sestamibi, diagnostic, per study dose | Carrier judgment | — | 1 |
| A9502 | Technetium tc-99m tetrofosmin, diagnostic, per study dose | Carrier judgment | — | 1 |
| A9555 | Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries | Carrier judgment | — | 1 |
| A9505 | Thallium tl-201 thallous chloride, diagnostic, per millicurie | Carrier judgment | — | 1 |
| A9526 | Nitrogen n-13 ammonia, diagnostic, per study dose, up to 40 millicuries | Carrier judgment | — | 1 |
| A4641 | Radiopharmaceutical, diagnostic, not otherwise classified | Carrier judgment | — | 1 |
| A9501 | Technetium tc-99m teboroxime, diagnostic, per study dose | Carrier judgment | — | 1 |
| A9611 | Flurpiridaz f 18, diagnostic, 1 millicurie | Carrier judgment | — | 1 |
| G0278 | Iliac and/or femoral artery angiography, non-selective, bilateral or ipsilateral to catheter insertion, performed at the same time as cardiac catheterization and/or coronary angiography, includes positioning or placement of the catheter in the distal aorta or ipsilateral femoral or iliac artery, injection of dye, production of permanent images, and radiologic supervision and interpretation (list separately in addition to primary procedure) | Carrier judgment | — | 1 |
| G0269 | Placement of occlusive device into either a venous or arterial access site, post surgical or interventional procedure (e.g., angioseal plug, vascular plug) | Special coverage instructions apply | — | 1 |
| J2785 | Injection, regadenoson, 0.1 mg | Carrier judgment | — | 1 |
| J3490 | Unclassified drugs | Special coverage instructions apply | — | 1 |
| C9399 | Unclassified drugs or biologicals | Special coverage instructions apply | — | 1 |
7 more codes are listed. See every code with payment by region in Caduvo.
Medicare policy articles listing Q23.82
- A57179: Billing and Coding: Transesophageal Echocardiogram (First Coast Service Options, Inc. (MAC - Part A, MAC - Part B); 3 Level II codes). LCD with the same title: L33756
- A56505: Billing and Coding: Transesophageal Echocardiography (TEE) (Novitas Solutions, Inc. (MAC - Part A, MAC - Part B); 6 Level II codes). LCD with the same title: L33579, L34337, L35016
- A56476: Billing and Coding: Cardiac Radionuclide Imaging (Palmetto GBA (MAC - Part A, MAC - Part B); 13 Level II codes). LCD with the same title: L33457
- A52850: Billing and Coding: Cardiac Catheterization and Coronary Angiography (Wellpoint Federal (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L33557, L33959
- A57306: Billing and Coding: Transthoracic Echocardiography (TTE) (CGS Administrators, LLC (MAC - Part A, MAC - Part B); 19 Level II codes). LCD with the same title: L33577, L34338
- A56625: Billing and Coding: Echocardiography (Palmetto GBA (MAC - Part A, MAC - Part B); 6 Level II codes). LCD with the same title: L37379
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Other Q23 diagnoses (Congenital malformations of aortic and mitral valves)
- Q23.81 — Bicuspid aortic valve
- Q23.88 — Other congenital malformations of aortic and mitral valves
- Q23.0 — Congenital stenosis of aortic valve
- Q23.1 — Congenital insufficiency of aortic valve
- Q23.2 — Congenital mitral stenosis
- Q23.3 — Congenital mitral insufficiency
- Q23.4 — Hypoplastic left heart syndrome
- Q23.9 — Congenital malformation of aortic and mitral valves, unspecified
Frequently asked questions
Does Medicare cover Q23.82 (Congenital mitral valve cleft leaflet)?
Medicare covers items and services, not diagnoses. 6 Medicare billing and coding articles list Q23.82 as a covered diagnosis for 32 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 Q23.82?
The Level II codes from the policies most specific to this diagnosis are C8925 (Transesophageal echocardiography (tee) with contrast, or…, 2 articles); C8926 (Transesophageal echocardiography (tee) with contrast, or…, 2 articles); C8927 (Transesophageal echocardiography (tee) with contrast, or…, 2 articles); J0461 (Injection, atropine sulfate, 0.01 mg, 3 articles); J0153 (Injection, adenosine, 1 mg (not to be used to report any…, 3 articles). Code choice depends on the item supplied; check each code's descriptor.
Which Medicare policy articles list Q23.82?
A57179 (Billing and Coding: Transesophageal Echocardiogram); A56505 (Billing and Coding: Transesophageal Echocardiography (TEE)); A56476 (Billing and Coding: Cardiac Radionuclide Imaging), and 3 more articles.
What is ICD-10-CM code Q23.82?
Q23.82 is the ICD-10-CM code for congenital mitral valve cleft leaflet, in category Q23 (Congenital malformations of aortic and mitral valves), chapter 17: Congenital malformations and chromosomal abnormalities.
Next steps
- Run a reimbursement report for a device billed under C8925
- Watch C8925 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for C8925
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 17: Congenital malformations and chromosomal abnormalities · All diagnoses · HCPCS lookup