What D2953 means

D2953 covers each additional indirectly fabricated post — same tooth. "D" is dental, "29" is the other-restorative-services group, and "53" is this additional cast post. A post and core (D2952 for the cast/indirectly-fabricated type) involves a post placed into a root-canal-treated tooth's canal, with a core built on it. Some teeth (multi-rooted teeth, like molars) have multiple canals, and a tooth may need more than one post for adequate retention (a post in more than one canal). When additional cast posts (beyond the first, which is part of D2952) are placed in the same tooth's other canals, each additional cast post is reported with D2953.

So it's the code for extra cast posts beyond the first, in the same tooth's multiple canals, reported in addition to the main post and core (D2952).

This applies to indirectly fabricated (cast) posts (the D2952 type). The main post and core (D2952) covers the post and core (with the first post); D2953 covers each additional cast post in the same tooth. (For prefabricated posts, the analogous codes are D2954 for the prefabricated post and core, and D2957 for each additional prefabricated post.) Additional posts are used in multi-canal teeth needing more than one post for adequate retention. Coverage is under restorative benefits when justified (a multi-canal tooth needing multiple posts); documentation supports the claim.

When it's typically used

D2953 is reported for each additional indirectly fabricated (cast) post on the same tooth — for an additional cast post beyond the first, when a multi-canal tooth needs more than one post for adequate retention, reported in addition to the main cast post and core (D2952).

How much does D2953 cost?

Each additional cast post is a moderate fee, often roughly 150 to 350 USD per additional post depending on region — added to the main post and core (D2952). It applies when a multi-canal tooth needs more than one post, with each additional cast post reported with this code.

Is D2953 covered by insurance?

Covered under restorative benefits when justified by a multi-canal tooth needing more than one post for adequate retention. Documentation of the multiple canals and the need for additional posts supports the claim. It's reported in addition to the main cast post and core (D2952). Coverage for additional posts may be reviewed. Verifying coverage and providing a narrative helps.

When a tooth needs more than one post

Some teeth need more than one post, and understanding when clarifies this additional-post code.

A post provides retention for a post and core in a root-canal-treated tooth, anchoring into a canal. Most often, one post (in the main/largest canal) provides adequate retention. But some teeth need more than one post. This applies to multi-rooted, multi-canal teeth — particularly molars, which have multiple roots and canals (e.g., several canals). When such a tooth needs a post and core, sometimes a single post doesn't provide adequate retention (the tooth's structure loss and the canals' anatomy may call for more anchorage), so the dentist places posts in more than one canal — using multiple posts to provide adequate retention for the core. The first post is part of the main post and core code (D2952), and each additional post (in the other canals) is reported with D2953.

So more than one post is used in multi-canal teeth where a single post doesn't provide adequate retention, and additional posts in the other canals add the needed anchorage. This is typically relevant for molars (with their multiple canals) needing substantial retention for the core. The number of additional posts depends on how many extra canals receive posts. The dentist determines when more than one post is needed (based on the tooth's anatomy and the retention required). For patients, understanding when a tooth needs more than one post — multi-canal teeth (like molars) where a single post doesn't provide adequate retention, so posts are placed in more than one canal — clarifies this additional-post code. It's for the extra posts in multi-canal teeth. The dentist determines the need based on the tooth's anatomy and retention needs. Understanding this helps patients see why their tooth (typically a molar with multiple canals) might need more than one post — to provide adequate retention for the post and core when a single post isn't enough — with each additional post reported with this code, ensuring the core has sufficient anchorage in a multi-canal tooth.

Cast posts and multiple canals

Cast posts in multiple canals have particular considerations, and understanding them clarifies this code's context.

This code is for indirectly fabricated (cast) posts — the D2952 type, where the post and core is custom-made (cast) for the tooth, often as a single casting or fitted pieces. For a multi-canal tooth needing multiple posts, the cast post and core is fabricated to incorporate posts for the canals being used. A cast post and core for a multi-canal tooth might be designed with posts extending into more than one canal (the casting incorporating multiple post portions), or with separate post components for the additional canals, depending on the technique. The main post and core (with the first post) is D2952, and each additional cast post (for the additional canals) is D2953.

The cast (indirectly fabricated) approach involves making an impression and having the post and core custom-cast (in a lab) to fit the tooth's canals and provide the core, then cementing it. For a multi-canal tooth, the casting accommodates the multiple canals/posts being used. This custom approach can provide a precise, strong post and core for the tooth, with the multiple posts (in multiple canals) providing the retention a multi-canal tooth may need. The additional cast posts (D2953) are part of this — the components for the additional canals beyond the first. The dentist (and lab) fabricate the cast post and core to incorporate the needed posts. For patients, understanding that cast posts in multiple canals involve a custom-fabricated post and core incorporating posts for the canals used — with the first post in D2952 and additional cast posts in D2953 — clarifies this code's context. It's for the additional cast post components in a multi-canal tooth. The dentist and lab fabricate the post and core for the tooth's canals. Understanding this helps patients see that a cast post and core for a multi-canal tooth incorporates the needed posts (for the canals used), with the additional cast posts (beyond the first) reported with this code, providing the custom-fabricated, multi-post retention a multi-canal tooth may need for its post and core.

Cast vs prefabricated additional posts

Additional posts come in cast and prefabricated types, and understanding the distinction clarifies the corresponding codes.

Post and core procedures use either cast (indirectly fabricated) or prefabricated posts, and the additional-post codes correspond. Cast (indirectly fabricated) post and core: the post and core is custom-cast for the tooth (D2952 for the main post and core); each additional cast post on the same tooth is D2953 (this code). Prefabricated post and core: a prefabricated (ready-made) post is used with a core (D2954 for the main prefabricated post and core); each additional prefabricated post on the same tooth is D2957. So for additional posts, the code depends on whether the posts are cast (D2953) or prefabricated (D2957), matching the type of post and core used (D2952 cast or D2954 prefabricated).

The cast versus prefabricated choice for the post and core involves: cast post and core (custom-made, can be precisely fitted, often for certain situations) versus prefabricated post and core (ready-made post, commonly used, often more economical and done in one visit). The additional-post codes (D2953 cast, D2957 prefabricated) follow the type used. So when a multi-canal tooth needs additional posts, they're reported with the code matching the post type (cast D2953 or prefabricated D2957). The dentist uses the appropriate post type and the corresponding codes. For patients, understanding that additional posts come in cast (D2953) and prefabricated (D2957) types — matching the post and core type (D2952 cast or D2954 prefabricated) — clarifies the corresponding codes. The additional-post code follows the post type used. The dentist uses the appropriate type and codes. Understanding this helps patients see that the additional-post code depends on whether cast (D2953, this code) or prefabricated (D2957) posts are used, corresponding to the type of post and core (cast or prefabricated) chosen for their tooth, with the additional posts in a multi-canal tooth reported with the matching code.

The post and core for a multi-canal tooth

A post and core for a multi-canal tooth provides retention through multiple posts, and understanding the overall restoration clarifies the role of additional posts.

For a multi-canal tooth (like a molar) that's been root-canal-treated and lost significant structure, a post and core may be needed to provide a foundation for a crown, and multiple posts (in multiple canals) may be used for adequate retention. The overall restoration involves: the root canal treatment (already done, treating the canals); the post and core — posts placed into the canals (one or more, depending on the retention needed) with a core built on them, providing the foundation; and the crown — placed over the core, restoring and protecting the tooth. For the multi-canal tooth needing multiple posts, the post and core incorporates posts in more than one canal (the first post in D2952, additional posts in D2953), providing the multi-post retention. So the additional posts (D2953) are part of providing adequate retention for the core in a multi-canal tooth.

This multi-post approach gives the core (and thus the crown) good retention in a tooth where a single post wouldn't suffice — important for a successful, lasting restoration of a significantly-damaged multi-canal tooth. The combination (root canal, multi-post post and core, crown) restores the tooth. The additional posts contribute the extra retention the multi-canal tooth needs. The dentist plans the post and core (including the number of posts) and the crown to restore the tooth. For patients, understanding that a post and core for a multi-canal tooth provides retention through multiple posts — with additional posts (D2953) adding retention beyond the first — clarifies the role of additional posts in the overall restoration. They provide the multi-post retention a multi-canal tooth needs. The dentist plans the post and core and crown to restore the tooth. Understanding this helps patients see how a significantly-damaged multi-canal tooth is restored — with a post and core (using multiple posts for adequate retention, the additional posts reported with this code) providing the foundation, and a crown restoring the tooth — so the multi-canal tooth gets the retention it needs through the multiple posts, supporting a successful restoration.

Frequently asked questions

What is the D2953 dental code?

It's each additional indirectly fabricated (cast) post on the same tooth — reported for an additional cast post beyond the first, when a multi-canal tooth needs more than one post for adequate retention. It's used in addition to the main cast post and core code (D2952).

When does a tooth need more than one post?

In multi-canal teeth (typically molars, with multiple roots and canals) where a single post doesn't provide adequate retention for the post and core, so posts are placed in more than one canal. Each additional post (beyond the first) is reported with this code.

What's a cast (indirectly fabricated) post?

A post and core that's custom-made (cast) for the tooth, often involving an impression and lab fabrication, then cemented. The cast type uses D2952 (main post and core) and D2953 (each additional cast post). The prefabricated type uses D2954 and D2957.

How is it different from D2957?

D2953 is for additional cast (indirectly fabricated) posts (matching a cast post and core, D2952). D2957 is for additional prefabricated posts (matching a prefabricated post and core, D2954). The code depends on whether the posts are cast or prefabricated.

How much does an additional cast post cost?

Often around 150 to 350 USD per additional post, added to the main post and core (D2952). It applies when a multi-canal tooth needs more than one post, with each additional cast post reported with this code.

Why use multiple posts?

To provide adequate retention for the post and core in a multi-canal tooth where a single post isn't enough. The multiple posts (in multiple canals) give the core good retention, supporting a successful restoration of the significantly-damaged multi-canal tooth, with a crown then placed over the core.

This page is an independent, plain-language explanation for general information only. It is not billing, coding, or clinical advice. For the official CDT descriptor and current-year wording, refer to the American Dental Association.