diff --git a/lib/seattleflu/id3c/cli/command/clinical.py b/lib/seattleflu/id3c/cli/command/clinical.py
index d0ce300a..354c3db2 100644
--- a/lib/seattleflu/id3c/cli/command/clinical.py
+++ b/lib/seattleflu/id3c/cli/command/clinical.py
@@ -56,6 +56,113 @@
 def clinical():
     pass
 
+# Parse sequencing accessions subcommand
+@clinical.command("parse-sequencing")
+@click.argument("accession_ids_filename", metavar = "<Sequencing accession IDs filename>")
+@click.argument("record_type", metavar="<record type>", type=click.Choice(['hcov19', 'rsv-a', 'rsv-b', 'flu-a', 'flu-b']))
+@click.argument("segment_accession_ids_filename", nargs=-1, metavar = "<Segment accession IDs filename>")
+@click.option("-o", "--output", metavar="<output filename>",
+    help="The filename for the output of missing barcodes")
+
+def parse_sequencing_accessions(accession_ids_filename, record_type, segment_accession_ids_filename, output):
+    """
+    Process sequencing accession IDs file.
+
+    Given a <Sequencing accession IDs filename> of a TSV or Excel file, selects specific
+    columns of interest and reformats the queried data into a stream of JSON
+    documents suitable for the "upload" sibling command.
+
+    A <Segment accession IDs filename> file is required for Flu sequences.
+
+    <output filename> is the desired filepath of the output CSV of problematic
+    barcodes encountered while parsing. If not provided, the problematic
+    barcodes print to the log.
+
+    All records parsed are output to stdout as newline-delimited JSON
+    records.  You will likely want to redirect stdout to a file.
+    """
+    if accession_ids_filename.endswith('.tsv'):
+        read = pd.read_csv
+    else:
+        read = pd.read_excel
+
+    read_accessions = partial(
+        read,
+        na_values = ['NA', '', 'Unknown', 'NULL']
+    )
+    clinical_records = (
+        read_accessions(accession_ids_filename, sep='\t')
+            .pipe(trim_whitespace)
+            .pipe(add_provenance, accession_ids_filename))
+
+    # only keep submitted records
+    clinical_records = clinical_records[clinical_records.status == 'submitted']
+
+    column_map = {
+        'sequence_identifier': 'sequence_identifier',
+        'sfs_sample_barcode': 'barcode',
+        'strain_name': 'strain_name',
+        'nwgc_id': 'nwgc_id',
+        'gisaid_accession': 'gisaid_accession',
+        'genbank_accession': 'genbank_accession',
+        'pathogen': 'pathogen',
+        '_provenance': '_provenance'
+    }
+    if record_type in ['flu-a', 'flu-b']:
+        assert segment_accession_ids_filename and len(segment_accession_ids_filename)==1 , 'Error: Missing required segment accession IDs file.'
+        segment_accession_ids_filename = segment_accession_ids_filename[0]
+        
+        clinical_records = clinical_records[clinical_records['pathogen'] == record_type]
+        column_map['subtype'] = 'subtype'
+        column_map['segment'] = 'segment'
+        if segment_accession_ids_filename.endswith('.tsv'):
+            read = pd.read_csv
+        else:
+            read = pd.read_excel
+
+        # Exlcuding "NA" from n/a values because it is used as neuraminidase segment code.
+        read_segment_accessions = partial(
+            read,
+            na_values = ['', 'Unknown', 'NULL'],
+            keep_default_na = False
+        )
+        clinical_records_segments = (
+            read_segment_accessions(segment_accession_ids_filename, sep='\t')
+                .pipe(trim_whitespace)
+                .pipe(add_provenance, segment_accession_ids_filename))
+
+        clinical_records_segments = clinical_records_segments[['strain_name', 'genbank_accession', 'sequence_id', 'segment', '_provenance']]
+
+        # Drop overlapping columns prior to merging
+        clinical_records.drop(columns=['genbank_accession', '_provenance'], inplace=True)
+        clinical_records = clinical_records.merge(clinical_records_segments, on='strain_name')
+
+    if record_type in ['rsv-a', 'rsv-b']:
+        assert 'subtype' not in clinical_records.columns, 'Error: unexpected column `subtype` in sequence records.'
+        clinical_records = clinical_records[clinical_records['pathogen'] == record_type]
+    elif record_type == 'hcov19':
+        assert 'pathogen' not in clinical_records.columns, 'Error: unexpected column `pathogen` in sequence records.'
+        clinical_records['pathogen'] = 'hcov19'
+
+    if clinical_records.empty:
+        dump_ndjson(clinical_records)
+    else:
+        clinical_records['sequence_identifier'] = clinical_records.apply(
+            lambda row: generate_hash(row['strain_name']) + '-' + row['pathogen'].upper().replace('-', ''), axis=1
+        )
+
+        clinical_records = clinical_records[(clinical_records['sfs_sample_barcode'].notnull())&(clinical_records.status=='submitted')].rename(columns=column_map)
+
+        # Flu data is by segment, so skipping barcode uniqueness check
+        if record_type not in ['flu-a', 'flu-b']:
+            barcode_quality_control(clinical_records, output)
+
+        # Drop columns we're not tracking
+        clinical_records = clinical_records[column_map.values()]
+
+        dump_ndjson(clinical_records)
+
+
 # UW Clinical subcommand
 @clinical.command("parse-uw")
 @click.argument("uw_filename", metavar = "<UW Clinical Data filename>")
diff --git a/lib/seattleflu/id3c/cli/command/etl/clinical.py b/lib/seattleflu/id3c/cli/command/etl/clinical.py
index b068af42..cdce04f6 100644
--- a/lib/seattleflu/id3c/cli/command/etl/clinical.py
+++ b/lib/seattleflu/id3c/cli/command/etl/clinical.py
@@ -11,7 +11,7 @@
 from id3c.db.session import DatabaseSession
 from id3c.db.datatypes import Json
 from id3c.cli.command.etl.redcap_det import insert_fhir_bundle
-
+from id3c.db.types import MinimalSampleRecord, GenomeRecord, OrganismRecord
 from id3c.cli.command.etl import (
     etl,
 
@@ -39,6 +39,7 @@
 from . import race, ethnicity
 from .fhir import *
 from .clinical_retrospectives import *
+from id3c.cli.command.etl.consensus_genome import find_organism
 from .redcap_map import map_symptom
 
 
@@ -104,9 +105,45 @@ def etl_clinical(*, db: DatabaseSession):
             # Most of the time we expect to see existing sites so a
             # select-first approach makes the most sense to avoid useless
             # updates.
-            site = find_or_create_site(db,
-                identifier = site_identifier(record.document["site"]),
-                details    = {"type": "retrospective"})
+            if record.document.get("site"):
+                site = find_or_create_site(db,
+                    identifier = site_identifier(record.document["site"]),
+                    details    = {"type": "retrospective"})
+            else:
+                site = None
+            
+            # Sequencing accession IDs are being loaded into the clinical receiving table, and will
+            # be processed differently than other records, populating only the warehouse.consensus_genome and 
+            # warehouse.genomic_sequence tables with the relevant data.
+            if record.document.get('genbank_accession') or record.document.get('gisaid_accession'):
+                if record.document['pathogen'] == 'flu-a':
+                    record.document['organism'] = record.document['pathogen'] + '::' + record.document['subtype']
+                else:
+                    record.document['organism'] = record.document['pathogen']
+                # Find the matching organism within the warehouse for the reference organism
+                organism_name_map = {
+                    'rsv-a': 'RSV.A',
+                    'rsv-b': 'RSV.B',
+                    'hcov19': 'Human_coronavirus.2019',
+                    'flu-a::h1n1': 'Influenza.A.H1N1',
+                    'flu-a::h3n2': 'Influenza.A.H3N2',
+                    'flu-b': 'Influenza.B'
+                }
+                organism = find_organism(db, organism_name_map[record.document['organism']])
+
+                assert organism, f"No organism found with name «{record.document['pathogen']}»"
+
+                # Most of the time we expect to see new sequences, so an
+                # insert-first approach makes the most sense to avoid useless
+                # queries.
+                genome = upsert_genome(db,
+                    sample = sample,
+                    organism = organism)
+
+                genomic_sequence = upsert_genomic_sequence(db,
+                    genome = genome,
+                    details = record.document)
+
 
 
             # PHSKC and KP2023 will be handled differently than other clinical records, converted
@@ -114,7 +151,7 @@ def etl_clinical(*, db: DatabaseSession):
             # by the FHIR ETL. When time allows, SCH and KP should follow suit.
             # Since KP2023 and KP samples both have KaiserPermanente as their site in id3c,
             # use the ndjson document's site to distinguish KP vs KP2023 samples
-            if site.identifier == 'RetrospectivePHSKC' or record.document["site"].upper() == 'KP2023':
+            elif site and (site.identifier == 'RetrospectivePHSKC' or record.document["site"].upper() == 'KP2023'):
                 fhir_bundle = generate_fhir_bundle(db, record.document, site.identifier)
                 insert_fhir_bundle(db, fhir_bundle)
 
@@ -159,6 +196,82 @@ def etl_clinical(*, db: DatabaseSession):
             LOG.info(f"Finished processing clinical record {record.id}")
 
 
+def upsert_genome(db: DatabaseSession, sample: MinimalSampleRecord, organism: OrganismRecord) -> GenomeRecord:
+    """
+    Upsert consensus genomes with the given *organism* and consensus genome *document*.
+    """
+    LOG.debug(f"""
+        Upserting genome with sample_id ${sample.id},
+        organism {organism.id} «{organism.lineage}»""")
+
+    data = {
+        "sample_id": sample.id,
+        "organism_id": organism.id
+    }
+
+    genome: GenomeRecord = db.fetch_row("""
+        insert into warehouse.consensus_genome (sample_id, organism_id)
+          values (%(sample_id)s, %(organism_id)s)
+
+        on conflict (sample_id, organism_id) where sequence_read_set_id is null do update
+            set sample_id = excluded.sample_id,
+                organism_id = excluded.organism_id
+
+        returning consensus_genome_id as id, sample_id, organism_id
+        """, data)
+
+    assert genome.id, "Upsert affected no rows!"
+
+    LOG.info(f"""
+        Upserted genome {genome.id} with sample ID «{genome.sample_id}»
+        and organism ID «{genome.organism_id}»
+        """)
+
+    return genome
+
+def upsert_genomic_sequence(db: DatabaseSession, genome: GenomeRecord, details: dict) -> Any:
+    """
+    Upsert genomic sequence given a *genome* record and *details*.
+    """
+    sequence_identifier = details['sequence_identifier'] + '-' + details.get('segment', '')
+    LOG.info(f"Upserting genomic sequence «{sequence_identifier}»")
+
+    data = {
+        "identifier": sequence_identifier,
+        "segment": details.get('segment', ''),
+        "seq": "",
+        "genome_id": genome.id,
+        "additional_details": Json({
+            k:v for k,v in details.items() if k in [
+                'nwgc_id',
+                'strain_name',
+                'genbank_accession',
+                'gisaid_accession',
+                '_provenance'
+            ]
+        })
+    }
+
+    genomic_sequence = db.fetch_row("""
+        insert into warehouse.genomic_sequence (identifier, segment, seq, consensus_genome_id, details)
+            values (%(identifier)s, %(segment)s, %(seq)s, %(genome_id)s, %(additional_details)s)
+
+        on conflict (identifier) do update
+            set seq = excluded.seq,
+                segment = excluded.segment,
+                details = excluded.details
+
+        returning genomic_sequence_id as id, identifier, segment, seq, consensus_genome_id
+        """, data)
+
+    #assert genomic_sequence.consensus_genome_id == genome.id, \
+    #    "Provided sequence identifier was not unique, matched a sequence linked to another consensus genome!"
+    assert genomic_sequence.id, "Upsert affected no rows!"
+
+    LOG.info(f"Upserted genomic sequence {genomic_sequence.id}»")
+
+    return genomic_sequence
+
 def create_encounter(db: DatabaseSession,
                      record: dict,
                      patient_reference: dict,