S01.552 vs S01.552D
S01.552 (Open bite of oral cavity) compared with S01.552D (Open bite of oral cavity, subsequent encounter), from the official CMS tabular data.
Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources
Summary
These codes represent different levels of the same hierarchy: S01.552 is the non-billable header that contains S01.552D, so only S01.552D (or a sibling) is reported.
Registry fact- What is different?
Title wording and billing status.S01.552D’s title adds “subsequent encounter” to the wording the two share (“Open bite of oral cavity”). S01.552 is a non-billable header; S01.552D is billable.
Registry fact
- Can these codes be reported together?
Not as a pair.S01.552 is the non-billable header that contains S01.552D. A header is not reported on a claim, so the choice is S01.552D or a sibling that matches the documentation.
Registry fact
- Is there an Excludes1 relationship?
None.Neither entry carries an Excludes1 note that names the other code. S01.552 carries 2 Excludes1 notes and S01.552D carries 2 Excludes1 notes covering other codes; the side-by-side table quotes them.
Official rule
- Is there an Excludes2 relationship?
None.Neither entry carries an Excludes2 note that names the other code. S01.552 carries 13 Excludes2 notes and S01.552D carries 13 Excludes2 notes covering other codes; the side-by-side table quotes them.
Official rule
- Is one more specific?
Yes.S01.552D is a subdivision of S01.552 in the tabular hierarchy, so it is the more specific of the two.
Registry fact
- Is one a parent or header code?
Yes.S01.552 is the non-billable header that contains S01.552D. A header stands for the whole family beneath it and is not reported on a claim.
Registry fact
- Are there sequencing instructions?
None.Neither entry carries a Code First or Use Additional Code note that names the other.
Official rule
- Are there other coding relationships?
None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.
MedCoder-derived
Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels
Can these codes be reported together?
Not as a pair — S01.552 is not reportable. S01.552 is the non-billable category that contains S01.552D.
A header stands for the whole family of codes beneath it and is not reported on a claim, so the choice is S01.552D or a sibling that matches the documentation. No Excludes1/Excludes2 relationship exists between these codes in the official tabular list.
Official guidance behind these answers
Section I.B.2 — Level of Detail in Coding · applies to: S01.552 and S01.552D
Diagnosis codes are to be used and reported at their highest number of characters available and to the highest level of specificity documented in the medical record. ICD-10-CM diagnosis codes are composed of codes with 3, 4, 5, 6 or 7 characters. Codes with three characters are included in ICD-10-CM as the heading of a category of codes that may be further subdivided by the use of fourth and/or fifth characters and/or sixth characters, which provide greater detail. A three-character code is to be used only if it is not further subdivided. A code is invalid if it has not been coded to the full number of characters required for that code, including the 7th character, if applicable.
ICD-10-CM Official Guidelines FY2027
Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum
Side by side
| S01.552Open bite of oral cavity | S01.552DOpen bite of oral cavity, subsequent encounter | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Open bite of oral cavity is a non-billable ICD-10-CM category code (S01.552). | Open bite of oral cavity, subsequent encounter is a billable ICD-10-CM diagnosis code (S01.552D). |
| 7th character | The appropriate 7th character is to be added to each code from category S01 | The appropriate 7th character is to be added to each code from category S01 |
| Includes | injuries of ear injuries of eye injuries of face [any part] injuries of gum | injuries of ear injuries of eye injuries of face [any part] injuries of gum |
| Excludes1 | superficial bite of oral cavity (S00.572) open skull fracture (S02.- with 7th character B) | superficial bite of oral cavity (S00.572) open skull fracture (S02.- with 7th character B) |
| Excludes2 | tooth dislocation (S03.2) tooth fracture (S02.5) injury of eye and orbit (S05.-) traumatic amputation of part of head (S08.-) burns and corrosions (T20-T32) effects of foreign body in ear (T16) effects of foreign body in larynx (T17.3) effects of foreign body in mouth NOS (T18.0) effects of foreign body in nose (T17.0-T17.1) effects of foreign body in pharynx (T17.2) effects of foreign body on external eye (T15.-) frostbite (T33-T34) insect bite or sting, venomous (T63.4) | tooth dislocation (S03.2) tooth fracture (S02.5) injury of eye and orbit (S05.-) traumatic amputation of part of head (S08.-) burns and corrosions (T20-T32) effects of foreign body in ear (T16) effects of foreign body in larynx (T17.3) effects of foreign body in mouth NOS (T18.0) effects of foreign body in nose (T17.0-T17.1) effects of foreign body in pharynx (T17.2) effects of foreign body on external eye (T15.-) frostbite (T33-T34) insect bite or sting, venomous (T63.4) |
| Code also | any associated: injury of cranial nerve (S04.-) injury of muscle and tendon of head (S09.1-) intracranial injury (S06.-) wound infection for any associated infection | any associated: injury of cranial nerve (S04.-) injury of muscle and tendon of head (S09.1-) intracranial injury (S06.-) wound infection for any associated infection |
Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on.
Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources