D2930 is the CDT code for a prefabricated stainless steel crown fitted and cemented chairside on a primary tooth.
- When to use: A primary tooth, lettered A through T, needs full coverage, often a molar after a pulpotomy or with extensive decay.
- When not to use: The same crown on a permanent tooth is D2931, a prefabricated ceramic crown is D2929, and a coated tooth-colored steel crown is D2934.
- Billing note: Carriers check the tooth number against the code, so a lettered primary tooth goes with D2930 and a numbered permanent tooth with D2931.
What D2930 covers
D2930 reports a prefabricated stainless steel crown placed on a primary (baby) tooth. Two facts define the code: the crown is stainless steel, a preformed metal cap that comes in stock sizes and is fitted chairside, and the tooth is primary. Change either fact and the code changes.
A stainless steel crown is the standard full-coverage restoration for a primary molar with extensive decay, a fracture, or a pulpotomy/pulpectomy that needs full coverage rather than a filling. Because it is prefabricated, there is no impression-and-lab cycle; the crown is selected, adapted, and cemented in one visit.
It does not cover:
- A stainless steel crown on a permanent tooth. That is D2931.
- A prefabricated ceramic (zirconia) crown on a primary tooth. That is D2929.
- A prefabricated resin crown. That is D2932, which has no primary or permanent limit in the code.
- A stainless steel crown with an esthetic resin window on the facial. That is D2933, also with no primary or permanent limit.
- A prefabricated esthetic coated (tooth-colored) stainless steel crown. That is D2934.
- A custom lab-fabricated crown. That is the D2740 / D2750 series.
The prefabricated-crown family splits two ways
The family is organized along two axes at once: tooth type (primary or permanent) and crown material or finish. D2930 and D2931 differ only in the tooth. D2930 and D2929 differ only in the material. D2930 and D2934 differ in the finish, bare metal versus coated.
Tooth type: the axis carriers check
Carriers cross-check the tooth number against the code. Lettered designations (A through T) are primary teeth and pair with D2930. Numbered designations (1 through 32) are permanent and pair with D2931.
A stainless steel crown billed as D2930 on tooth #3, an adult molar, is a coding error. A D2931 on tooth #A is the same error in reverse. The cases that cause trouble are mixed dentition in children and retained primary teeth in adults, where the tooth identification has to be right before the code can follow.
Material and finish: D2930 versus D2929 and D2934
When a parent asks for a tooth-colored result on a baby tooth, three codes are easy to blur:
- D2930 is bare (silver) stainless steel, the standard benefit on most plans.
- D2929 is a prefabricated porcelain/ceramic crown, commonly zirconia. It is a separate, fully tooth-colored material for any primary tooth, anterior or posterior, not an anterior-only code.
- D2934 is esthetic coated stainless steel on a primary tooth: a metal crown with a tooth-colored coating on the outside.
D2929 and D2934 both read as tooth-colored to the parent, but D2929 is a different material and D2934 is the same metal with a coating. Most plans benchmark coverage to the D2930 amount and treat the esthetic versions as an upgrade. What the patient owes is plan-dependent, so quote it from the plan before treatment.
Top billing problems with D2930
- Tooth-type mismatch. The code says primary but the tooth number is permanent, or the reverse. Carriers deny or reclassify. This is the most common clean reason for a problem on this code.
- Esthetic upgrade downgrade. The office places a tooth-colored crown (D2929, D2933, or D2934) and the plan pays only the D2930 amount, leaving the patient the difference. Plan-dependent.
- Frequency or eligibility limit on primary teeth. Some plans limit primary-tooth crowns by frequency or by patient age, and the crown becomes the patient’s expense. These are plan rules, not code rules, so verify them.
- Buildup billed alongside. D2950 submitted with D2930 is commonly bundled, since a prefabricated crown does not carry a separately benefited foundation the way a cast crown does.
Documentation that supports the claim
A stainless steel crown on a primary tooth is a routine benefit on most plans, but the claim should still carry:
- The correct primary tooth designation (lettered, A through T).
- A radiograph showing the decay, fracture, or post-pulpotomy state that justifies full coverage.
- The clinical reason for a crown over a filling (extent of decay, pulp therapy, fracture).
In the patient record, document the tooth, the material placed, and whether pulp therapy preceded the crown. If an esthetic crown was placed instead, document the material and the patient’s election of the upgrade so the financial conversation is on the chart.
Example case
A pediatric patient has primary tooth K with deep decay and a completed pulpotomy. The dentist fits and cements a prefabricated stainless steel crown.
Billing steps:
- Confirm the tooth is primary (lettered, K) so the code is D2930, not D2931.
- Code D2930, with the pulpotomy reported under its own code on the same date.
- Attach the radiograph showing the decay and the pulp therapy.
- Read the EOB. A stainless steel crown on a primary molar usually pays as a routine benefit. If it denies, check the tooth-type match and any primary-tooth frequency rule first.
FAQs
- What is the difference between D2930 and D2931?
- The tooth type. D2930 is a prefabricated stainless steel crown on a primary (baby) tooth, and D2931 is the same crown on a permanent (adult) tooth. The crown and material are identical, so the tooth number on the claim has to match the code.
- How is D2930 different from D2929?
- Material. D2930 is a stainless steel (metal) crown; D2929 is a prefabricated porcelain/ceramic crown, commonly zirconia. Both are prefabricated and both go on primary teeth, anterior or posterior, so the choice is the material placed, not the tooth's position.
- Does a plan cover a tooth-colored crown on a baby molar?
- It depends on the plan. Many plans cover the stainless steel crown (D2930) as the benefit and treat the esthetic alternatives (D2934 coated stainless steel, D2929 ceramic) as an upgrade, paying the D2930 benefit and leaving the patient the difference. Check the esthetic-crown language before quoting a tooth-colored crown for a posterior primary tooth.
- Is a buildup billable under a stainless steel crown?
- Usually not as a separate benefit. A prefabricated crown like D2930 is placed without the structural buildup a cast crown needs, and most plans consider any foundation material inclusive to the crown, so D2950 with D2930 on the same primary tooth is commonly bundled or denied. This is plan-dependent.
- Is there an age limit on D2930?
- Not in the code. D2930 is defined by the tooth being primary, not by the patient's age, so a primary tooth in an older child or a retained primary tooth in an adult can still take it. Plans often apply their own age or eligibility rules to primary-tooth services, and coverage follows those.
Related codes
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CDT codes are maintained by the American Dental Association. This page is an editorial billing guide, not the official ADA code descriptor. Verify current coverage policies with each carrier before submitting claims.