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ICD-10-CM 2027 diagnosis code

C14.8Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx

✓ Billable / specific

C14.8 is a valid, billable ICD-10-CM code for malignant neoplasm of overlapping sites of lip, oral cavity and pharynx. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Malig neoplm of ovrlp sites of lip, oral cavity and pharynx

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About C14.8

C14.8 is the ICD-10-CM diagnosis code for malignant neoplasm of overlapping sites of lip, oral cavity and pharynx. It belongs to category C14 (malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx), block C00-C14 (malignant neoplasms of lip, oral cavity and pharynx) and chapter 2 (neoplasms). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within C14 (malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx), C14.8 is specifically for malignant neoplasm of overlapping sites of lip, oral cavity and pharynx. Related codes cover pharynx, unspecified (C14.0) and waldeyer's ring (C14.2).

Don't report C14.8 together with the conditions in its Excludes1 note: 'book leaf' neoplasm [ventral surface of tongue and floor of mouth] (C06.89).

Use an additional code to identify: alcohol abuse and dependence (F10.-), exposure to environmental tobacco smoke (Z77.22), exposure to tobacco smoke in the perinatal period (P96.81), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31) and 2 more.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 146 (Ear, Nose, Mouth and Throat Malignancy with MCC, relative weight 2.1329), DRG 147 (Ear, Nose, Mouth and Throat Malignancy with CC, relative weight 1.3055) and DRG 148 (Ear, Nose, Mouth and Throat Malignancy without CC/MCC, relative weight 0.8008), in Pre-MDC and MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 149.8 (malignant neoplasm of other sites within the lip and oral cavity) and 149.9 (malignant neoplasm of ill-defined sites within the lip and oral cavity).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Primary malignant neoplasm of two or more contiguous sites of lip, oral cavity and pharynx
Excludes1Not coded here — never report together with this code
  • 'book leaf' neoplasm [ventral surface of tongue and floor of mouth] (C06.89)

Notes that apply from higher levels

Instructions written at a parent level also apply to C14.8.

› From C14 Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx
Excludes1
  • malignant neoplasm of oral cavity NOS (C06.9)
Use additional code
  • code to identify:
  • alcohol abuse and dependence (F10.-)
  • exposure to environmental tobacco smoke (Z77.22)
  • exposure to tobacco smoke in the perinatal period (P96.81)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Broader instructions also apply from Chapter 2: Neoplasms.

Table of Drugs & Neoplasms entries

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 149.8Malignant neoplasm of other sites within the lip and oral cavityapproximate
  • 149.9Malignant neoplasm of ill-defined sites within the lip and oral cavityapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about C14.8

Is C14.8 billable?

Yes. C14.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can C14.8 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict C14.8 as a principal diagnosis.

Is C14.8 a CC or MCC?

No. C14.8 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does C14.8 group to?

C14.8 is used in the MS-DRG v44.0 logic for MS-DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC), MS-DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC), MS-DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC), MS-DRG 146 (Ear, Nose, Mouth and Throat Malignancy with MCC), MS-DRG 147 (Ear, Nose, Mouth and Throat Malignancy with CC) and MS-DRG 148 (Ear, Nose, Mouth and Throat Malignancy without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for C14.8?

The CMS General Equivalence Mappings map C14.8 to ICD-9-CM 149.8 and 149.9.