S00.02XA: Blister (nonthermal) of scalp, initial encounter
S00.02XA, blister (nonthermal) of scalp, initial encounter, is listed as a covered diagnosis in 3 Medicare billing and coding articles that apply to 19 HCPCS Level II codes, including J1670 (Injection, tetanus immune globulin, human, up to 250 units), G0008 (Administration of influenza virus vaccine), G0009 (Administration of pneumococcal vaccine). The articles come from 2 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with S00.02XA as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| J1670 | Injection, tetanus immune globulin, human, up to 250 units | Special coverage instructions apply | — | 1 |
| G0008 | Administration of influenza virus vaccine | Carrier judgment | — | 1 |
| G0009 | Administration of pneumococcal vaccine | Carrier judgment | — | 1 |
| G0010 | Administration of hepatitis b vaccine | Carrier judgment | — | 1 |
| Q2038 | Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluzone) | Special coverage instructions apply | — | 1 |
| Q2035 | Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (afluria) | Special coverage instructions apply | — | 1 |
| Q2037 | Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluvirin) | Special coverage instructions apply | — | 1 |
| Q2034 | Influenza virus vaccine, split virus, for intramuscular use (agriflu) | Special coverage instructions apply | — | 1 |
| Q2036 | Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (flulaval) | Special coverage instructions apply | — | 1 |
| Q2039 | Influenza virus vaccine, not otherwise specified | Special coverage instructions apply | — | 1 |
| G2187 | Patients with clinical indications for imaging of the head: head trauma | Carrier judgment | — | 1 |
| G2188 | Patients with clinical indications for imaging of the head: new or change in headache above 50 years of age | Carrier judgment | — | 1 |
| G2189 | Patients with clinical indications for imaging of the head: abnormal neurologic exam | Carrier judgment | — | 1 |
| G2190 | Patients with clinical indications for imaging of the head: headache radiating to the neck | Carrier judgment | — | 1 |
| G2191 | Patients with clinical indications for imaging of the head: positional headaches | Carrier judgment | — | 1 |
| G2192 | Patients with clinical indications for imaging of the head: temporal headaches in patients over 55 years of age | Carrier judgment | — | 1 |
| G2193 | Patients with clinical indications for imaging of the head: new onset headache in pre-school children or younger (<6 years of age) | Carrier judgment | — | 1 |
| G2194 | Patients with clinical indications for imaging of the head: new onset headache in pediatric patients with disabilities for which headache is a concern as inferred from behavior | Carrier judgment | — | 1 |
| G2195 | Patients with clinical indications for imaging of the head: occipital headache in children | Carrier judgment | — | 1 |
Medicare policy articles listing S00.02XA
- A52438: Billing and Coding: Tetanus Immunization (CGS Administrators, LLC (MAC - Part A, MAC - Part B); 1 Level II codes)
- A54767: Billing and Coding: Medicare Preventive Coverage for Certain Vaccines (Palmetto GBA (MAC - Part A, MAC - Part B); 9 Level II codes)
- A56612: Billing and Coding: CT of the Head (Palmetto GBA (MAC - Part A, MAC - Part B); 9 Level II codes). LCD with the same title: L34417
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Other S00 diagnoses (Superficial injury of head)
- S00.04XA — External constriction of part of scalp, initial encounter
- S00.06XA — Insect bite (nonvenomous) of scalp, initial encounter
Frequently asked questions
Does Medicare cover S00.02XA (Blister (nonthermal) of scalp, initial encounter)?
Medicare covers items and services, not diagnoses. 3 Medicare billing and coding articles list S00.02XA as a covered diagnosis for 19 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 S00.02XA?
The Level II codes from the policies most specific to this diagnosis are J1670 (Injection, tetanus immune globulin, human, up to 250 units, 1 article); G0008 (Administration of influenza virus vaccine, 1 article); G0009 (Administration of pneumococcal vaccine, 1 article); G0010 (Administration of hepatitis b vaccine, 1 article); Q2038 (Influenza virus vaccine, split virus, when administered to…, 1 article). Code choice depends on the item supplied; check each code's descriptor.
Which Medicare policy articles list S00.02XA?
A52438 (Billing and Coding: Tetanus Immunization); A54767 (Billing and Coding: Medicare Preventive Coverage for Certain Vaccines); A56612 (Billing and Coding: CT of the Head).
What is ICD-10-CM code S00.02XA?
S00.02XA is the ICD-10-CM code for blister (nonthermal) of scalp, initial encounter, in category S00 (Superficial injury of head), chapter 19: Injury, poisoning and other consequences of external causes.
Next steps
- Run a reimbursement report for a device billed under J1670
- Watch J1670 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for J1670
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 19: Injury, poisoning and other consequences of external causes · All diagnoses · HCPCS lookup