Skip to main content
ICD-10/T70.1XXA

T70.1XXA ICD-10-CM Code: Sinus barotrauma, initial encounter

T70.1XXA is the authoritative medical code for Sinus barotrauma, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for sinus barotrauma, initial encounter (ICD-10-CM T70.1XXA), ensuring healthcare documentation aligns with current federal coding standards.

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

  • MS-DRG 152 — OTITIS MEDIA AND URI WITH MCC (MDC 03)
  • MS-DRG 153 — OTITIS MEDIA AND URI WITHOUT MCC (MDC 03)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Sinus barotrauma, initial encounter is a billable ICD-10-CM diagnosis code (T70.1A). Inclusion terms: Aerosinusitis; Effects of change in ambient atmospheric pressure on sinuses. Code also: , if applicable, place of occurrence, such as:; highway rest stop (Y92.523); school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-); service areas as the place of occurrence of the external cause (Y92.52-); single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-); transport vehicle as the place of occurrence of the external cause (Y92.81-). 7th character: The appropriate 7th character is to be added to each code from category T70.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T70.1XXA in the official ICD-10-CM tabular list.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Aerosinusitis
  • Effects of change in ambient atmospheric pressure on sinuses

Code Also

Additional codes that may be required to fully describe the encounter.

  • Code also, if applicable, place of occurrence, such as:
  • highway rest stop (Y92.523)
  • school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
  • service areas as the place of occurrence of the external cause (Y92.52-)
  • single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
  • transport vehicle as the place of occurrence of the external cause (Y92.81-)

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T70.1XXA require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category T70.

What conditions are included under T70.1XXA?

Sinus barotrauma, initial encounter includes: Aerosinusitis; Effects of change in ambient atmospheric pressure on sinuses.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T70.1XXA in its code family, with their registry titles.

  • T70.0 — Otitic barotrauma
  • T70.0XXA — Otitic barotrauma, initial encounter
  • T70.0XXD — Otitic barotrauma, subsequent encounter
  • T70.0XXS — Otitic barotrauma, sequela
  • T70.1 — Sinus barotrauma
  • T70.1XXD — Sinus barotrauma, subsequent encounter
  • T70.1XXS — Sinus barotrauma, sequela
  • T70.2 — Other and unspecified effects of high altitude
  • T70.20 — Unspecified effects of high altitude
  • T70.20XA — Unspecified effects of high altitude, initial encounter

View all codes in the T70 family