024G072
Creation Mitral Valve to Common Atrioventricular Valve with Autologous Tissue Substitute, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 2 Heart and Great Vessels |
| Operation | 4 Creation |
| Body Part | G Mitral Valve |
| Approach | 0 Open |
| Device | 7 Autologous Tissue Substitute |
| Qualifier | 2 Common Atrioventricular Valve |
Operation Definition
Putting in or on biological or synthetic material to form a new body part that to the extent possible replicates the anatomic structure or function of an absent body part
Procedure Overview
Creation procedures in the heart and great vessels involve building a new anatomic structure using biological tissue or synthetic material when a structure is absent or cannot be repaired by other means. Rather than repairing or replacing an existing part, the surgeon fashions a substitute intended to approximate the shape and function of what would normally be there. In cardiac surgery this typically comes up in complex congenital reconstructions, where a chamber, valve, or vascular connection never developed properly and must be constructed essentially from scratch using patch material, conduit, or grafted tissue.
Patients and families encounter this concept most often in the context of staged single-ventricle repairs or other rare structural anomalies, where surgeons build a functional pathway that nature did not provide. The goal is to restore circulation as close to normal physiology as achievable, understanding that a created structure is an approximation rather than a true native part.
Anatomy & Axis Detail
Mitral Valve
Creation of a mitral valve is a rare procedure used when the native valve apparatus is congenitally absent or so severely malformed that no valve tissue exists to repair or replace, requiring the surgeon to construct an entirely new valve mechanism between the left atrium and left ventricle using autologous tissue, nonautologous tissue, or a prosthetic substitute. Because the mitral valve relies on a complex interplay of leaflets, chordae tendineae, and papillary muscles to prevent regurgitation while allowing unimpeded filling of the left ventricle, constructing a functional substitute demands careful attention to annular sizing and subvalvular support to avoid distortion of left ventricular geometry. This procedure is distinct from mitral valve replacement, which presumes an existing valve is being removed and substituted, and documentation should reflect the device material used to build the new valve structure, since this determines the coded device value.
Approach: Open
Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.
Device: Autologous Tissue Substitute
Autologous Tissue Substitute identifies a device value where material harvested from the patient's own body, such as an autograft, is used to replace or reconstruct a body part. Its defining feature is tissue origin from the patient, setting it apart from Nonautologous Tissue Substitute, sourced from a donor or animal, and Synthetic Substitute, made of manufactured material.
Qualifier: Common Atrioventricular Valve
This qualifier designates the common atrioventricular valve found in complete atrioventricular canal defect, where mitral and tricuspid tissue has not fully separated. It contrasts with the left and right atrioventricular valve qualifiers, which apply once the valve has been divided or in anatomy where two distinct AV valves already exist.
Coding & Documentation
This root operation is used sparingly in the heart and great vessels body system, and documentation must clearly describe that a new structure was fabricated rather than repaired, replaced, or bypassed - operative notes should specify the material used and confirm no native equivalent existed to work from. Coders should be alert to conflating Creation with Replacement, since both involve placing material into the body: Replacement swaps out an existing body part, while Creation applies only when the part being formed did not previously exist in that configuration. Because this operation is uncommon outside select congenital and reconstructive contexts, coders should verify against current facility coding guidance before assigning it and avoid defaulting to it whenever unfamiliar graft or patch material appears in the note.