ICD-10-CM Codes
C00-D49
C00-C14
C03-
2023 ICD-10-CM Diagnosis Code C03.0

2023 ICD-10-CM Diagnosis Code C03.0

Malignant neoplasm of upper gum

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

C03.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM C03.0 became effective on October 1, 2022.
This is the American ICD-10-CM version of C03.0 - other international versions of ICD-10 C03.0 may differ.

The following code(s) above C03.0 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to C03.0:

C00-D49
2023 ICD-10-CM Range C00-D49
Neoplasms
Note
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
Neoplasms
C03
ICD-10-CM Diagnosis Code C03
Malignant neoplasm of gum
Includes
- malignant neoplasm of alveolar (ridge) mucosa
- malignant neoplasm of gingiva
Type 2 Excludes
- malignant odontogenic neoplasms (C41.0-C41.1)
Use Additional
- code to identify:
- alcohol abuse and dependence (F10.-)
- history of tobacco dependence (Z87.891)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Malignant neoplasm of gum

Approximate Synonyms

Cancer of the gum, upper
Primary malignant neoplasm of upper gum
Primary squamous cell carcinoma of upper gum
Squamous cell carcinoma, upper gum

ICD-10-CM C03.0 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

011 Tracheostomy for face, mouth and neck diagnoses or laryngectomy with mcc
012 Tracheostomy for face, mouth and neck diagnoses or laryngectomy with cc
013 Tracheostomy for face, mouth and neck diagnoses or laryngectomy without cc/mcc
146 Ear, nose, mouth and throat malignancy with mcc
147 Ear, nose, mouth and throat malignancy with cc
148 Ear, nose, mouth and throat malignancy without cc/mcc

Convert C03.0 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Code annotations containing back-references to C03.0:

Type 2 Excludes: C41.0

ICD-10-CM Diagnosis Code C41.0
Malignant neoplasm of bones of skull and face
Applicable To
- Malignant neoplasm of maxilla (superior)
- Malignant neoplasm of orbital bone
Type 2 Excludes
- carcinoma, any type except intraosseous or odontogenic of:
- maxillary sinus (C31.0)
- upper jaw (C03.0)
- malignant neoplasm of jaw bone (lower) (C41.1)

ICD-10-CM Codes Adjacent To C03.0

C01 Malignant neoplasm of base of tongue

C02 Malignant neoplasm of other and unspecified parts of tongue

C02.0 Malignant neoplasm of dorsal surface of tongue

C02.1 Malignant neoplasm of border of tongue

C02.2 Malignant neoplasm of ventral surface of tongue

C02.3 Malignant neoplasm of anterior two-thirds of tongue, part unspecified

C02.4 Malignant neoplasm of lingual tonsil

C02.8 Malignant neoplasm of overlapping sites of tongue

C02.9 Malignant neoplasm of tongue, unspecified

C03 Malignant neoplasm of gum

C03.0 Malignant neoplasm of upper gum

C03.1 Malignant neoplasm of lower gum

C03.9 Malignant neoplasm of gum, unspecified

C04 Malignant neoplasm of floor of mouth

C04.0 Malignant neoplasm of anterior floor of mouth

C04.1 Malignant neoplasm of lateral floor of mouth

C04.8 Malignant neoplasm of overlapping sites of floor of mouth

C04.9 Malignant neoplasm of floor of mouth, unspecified

C05 Malignant neoplasm of palate

C05.0 Malignant neoplasm of hard palate

C05.1 Malignant neoplasm of soft palate

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code C03.0

Malignant neoplasm of upper gum

Neoplasms

Malignant neoplasm of gum

Malignant neoplasm of bones of skull and face